$98+ Cheap flights from Dulles Intl (IAD) to Montana
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BZN
Aug 20 — Aug 271
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Dulles Intl to Montana with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Montana
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to MontanaExplore the most affordable flight options available from Dulles Intl to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.
Explore the most affordable flight options available from Dulles Intl to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
IAD
- WYS
1 stop7h 27m
Delta
Sat 8/2911:29 am
WYS
- IAD
1 stop6h 30m
Delta
Deal found 7/18![Delta logo]()
$334
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
IAD
- GTF
1 stop7h 33m
Delta
Sat 11/141:10 pm
GTF
- IAD
1 stop8h 36m
Delta
Deal found 7/16![Delta logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:52 pm
IAD
- BIL
2 stops26h 03m
Multiple Airlines
Mon 8/248:58 pm
BIL
- IAD
1 stop9h 06m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:23 pm
IAD
- BIL
1 stop7h 49m
Delta
Wed 9/96:20 am
BIL
- IAD
1 stop5h 11m
Delta
Deal found 7/17![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:30 pm
IAD
- GTF
2 stops12h 08m
Delta
Mon 8/315:40 am
GTF
- IAD
2 stops12h 25m
Delta
Deal found 7/20![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:49 pm
IAD
- MSO
1 stop6h 58m
Delta
Thu 8/271:16 pm
MSO
- IAD
1 stop8h 23m
Delta
Deal found 7/16![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:46 am
IAD
- BIL
1 stop10h 46m
Alaska Airlines
Tue 11/175:12 pm
BIL
- IAD
1 stop10h 39m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:10 am
IAD
- BZN
1 stop7h 53m
American Airlines
Tue 8/256:26 am
BZN
- IAD
2 stops12h 30m
American Airlines
Deal found 7/20![American Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:49 pm
IAD
- BIL
1 stop6h 41m
Delta
Tue 8/2511:51 am
BIL
- IAD
2 stops10h 43m
Delta
Deal found 7/17![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:49 pm
IAD
- MSO
1 stop6h 58m
Delta
Mon 8/246:27 pm
MSO
- IAD
2 stops12h 53m
Delta
Deal found 7/18![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:15 am
IAD
- BZN
Nonstop4h 27m
United Airlines
Sat 8/2910:25 am
BZN
- IAD
Nonstop3h 56m
United Airlines
Deal found 7/20![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:23 pm
IAD
- BZN
1 stop8h 39m
Delta
Sat 8/296:19 am
BZN
- IAD
1 stop5h 16m
Delta
Deal found 7/16![Delta logo]()
$359
Best flights from Dulles Intl to MontanaDiscover carefully curated flight deals from Dulles Intl to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 21, 2026.
Discover carefully curated flight deals from Dulles Intl to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 21, 2026.
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:10 am
IAD
- WYS
2 stops8h 17m
Delta
Sat 8/2911:29 am
WYS
- IAD
1 stop6h 30m
Delta
Deal found 7/18![Delta logo]()
$344
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:46 am
IAD
- BIL
1 stop10h 46m
Alaska Airlines
Tue 11/176:00 am
BIL
- IAD
1 stop8h 14m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:15 am
IAD
- BZN
Nonstop4h 27m
United Airlines
Wed 8/267:55 am
BZN
- IAD
1 stop6h 07m
United Airlines
Deal found 7/19![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:49 pm
IAD
- BIL
1 stop6h 41m
Delta
Tue 8/2511:51 am
BIL
- IAD
2 stops10h 43m
Delta
Deal found 7/17![Delta logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:35 pm
IAD
- BZN
1 stop27h 10m
Alaska Airlines
Wed 8/262:21 pm
BZN
- IAD
1 stop13h 19m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:25 am
IAD
- BIL
2 stops12h 14m
Delta
Sat 11/146:15 am
BIL
- IAD
2 stops10h 11m
Delta
Deal found 7/17![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:25 pm
IAD
- MSO
2 stops8h 53m
Delta
Mon 8/246:27 pm
MSO
- IAD
2 stops12h 53m
Delta
Deal found 7/19![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:57 pm
IAD
- HLN
1 stop24h 44m
Alaska Airlines
Wed 9/305:18 pm
HLN
- IAD
1 stop10h 22m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:03 pm
IAD
- MSO
2 stops11h 15m
Delta
Mon 8/315:30 am
MSO
- IAD
2 stops12h 35m
Delta
Deal found 7/20![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:35 am
IAD
- FCA
1 stop10h 46m
United Airlines
Wed 10/282:29 pm
FCA
- IAD
1 stop6h 36m
United Airlines
Deal found 7/20![United Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:03 am
IAD
- MSO
1 stop8h 14m
Alaska Airlines
Wed 9/94:16 pm
MSO
- IAD
1 stop11h 24m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:00 am
IAD
- MSO
1 stop10h 17m
Alaska Airlines
Mon 10/53:49 pm
MSO
- IAD
1 stop11h 51m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:29 pm
IAD
- BIL
2 stops12h 24m
Delta
Wed 9/96:23 am
BIL
- IAD
1 stop5h 08m
Delta
Deal found 7/19![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:56 pm
IAD
- FCA
1 stop7h 51m
United Airlines
Wed 8/56:20 am
FCA
- IAD
1 stop9h 38m
United Airlines
Deal found 7/17![United Airlines logo]()
$534
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:23 pm
IAD
- BIL
1 stop7h 49m
Delta
Sat 9/56:26 am
BIL
- IAD
2 stops11h 39m
Delta
Deal found 7/18![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
IAD
- HLN
1 stop11h 34m
Alaska Airlines
Mon 8/315:11 pm
HLN
- IAD
1 stop10h 29m
Alaska Airlines
Deal found 7/18![Alaska Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:15 pm
IAD
- FCA
1 stop7h 06m
United Airlines
Thu 9/172:31 pm
FCA
- IAD
1 stop8h 01m
United Airlines
Deal found 7/18![United Airlines logo]()
$550
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:49 pm
IAD
- FCA
1 stop7h 07m
Delta
Thu 8/2712:02 pm
FCA
- IAD
1 stop9h 37m
Delta
Deal found 7/17![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:00 am
IAD
- FCA
1 stop17h 56m
Alaska Airlines
Wed 8/268:01 pm
FCA
- IAD
1 stop7h 39m
Alaska Airlines
Deal found 7/17![Alaska Airlines logo]()
$440
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:43 pm
IAD
- FCA
1 stop8h 38m
United Airlines
Tue 9/156:20 am
FCA
- IAD
1 stop9h 30m
United Airlines
Deal found 7/19![United Airlines logo]()
$550
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
IAD
- HLN
1 stop7h 15m
Delta
Sat 8/2912:55 pm
HLN
- IAD
2 stops9h 39m
Delta
Deal found 7/20![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:00 am
IAD
- MSO
1 stop18h 01m
Alaska Airlines
Mon 9/217:00 am
MSO
- IAD
1 stop7h 54m
Alaska Airlines
Deal found 7/18![Alaska Airlines logo]()
$450
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:15 pm
IAD
- BIL
2 stops8h 00m
Delta
Fri 9/256:33 pm
BIL
- IAD
2 stops15h 12m
Delta
Deal found 7/19![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:20 am
IAD
- COD
1 stop11h 32m
United Airlines
Wed 8/195:53 pm
COD
- IAD
1 stop15h 31m
United Airlines
Deal found 7/18![United Airlines logo]()
$602
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am
IAD
- BZN
1 stop17h 59m
Alaska Airlines
Sat 9/197:03 am
BZN
- IAD
1 stop14h 56m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:49 pm
IAD
- BIL
1 stop6h 41m
Delta
Mon 8/105:20 am
BIL
- IAD
2 stops11h 08m
Delta
Deal found 7/20![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:20 am
IAD
- COD
1 stop11h 32m
United Airlines
Mon 8/175:53 pm
COD
- IAD
1 stop9h 32m
United Airlines
Deal found 7/18![United Airlines logo]()
$602
This Alaska Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
IAD
- FCA
1 stop14h 41m
Alaska Airlines
Wed 9/166:08 pm
FCA
- IAD
1 stop9h 32m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:47 pm
IAD
- BZN
1 stop6h 32m
Delta
Sat 10/31:37 pm
BZN
- IAD
1 stop7h 46m
Delta
Deal found 7/19![Delta logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:47 pm
IAD
- GTF
1 stop24h 51m
Alaska Airlines
Wed 8/265:18 pm
GTF
- IAD
1 stop10h 22m
Alaska Airlines
Deal found 7/18![Alaska Airlines logo]()
$463
Last-minute flights from Dulles Intl to MontanaDiscover last-minute flight deals from Dulles Intl to Montana. Data last updated July 21, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Montana. Data last updated July 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:00 am
IAD
- GTF
1 stop7h 28m
Delta
Tue 8/186:18 pm
GTF
- IAD
2 stops15h 31m
Delta
Deal found 7/18![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:49 pm
IAD
- BIL
1 stop6h 41m
Delta
Tue 8/2511:51 am
BIL
- IAD
2 stops10h 43m
Delta
Deal found 7/17![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:49 pm
IAD
- MSO
1 stop6h 58m
Delta
Mon 8/246:27 pm
MSO
- IAD
2 stops12h 53m
Delta
Deal found 7/18![Delta logo]()
$354
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:10 am
IAD
- BZN
1 stop7h 53m
American Airlines
Tue 8/256:26 am
BZN
- IAD
2 stops12h 30m
American Airlines
Deal found 7/20![American Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:25 pm
IAD
- BIL
2 stops8h 05m
Delta
Mon 8/245:20 am
BIL
- IAD
2 stops11h 08m
Delta
Deal found 7/17![Delta logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:52 pm
IAD
- BIL
2 stops26h 03m
Multiple Airlines
Mon 8/248:58 pm
BIL
- IAD
1 stop9h 06m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:15 am
IAD
- BZN
Nonstop4h 27m
United Airlines
Sat 8/2910:25 am
BZN
- IAD
Nonstop3h 56m
United Airlines
Deal found 7/20![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:23 pm
IAD
- BZN
1 stop8h 39m
Delta
Sat 8/296:19 am
BZN
- IAD
1 stop5h 16m
Delta
Deal found 7/16![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:30 pm
IAD
- GTF
2 stops12h 08m
Delta
Mon 8/315:40 am
GTF
- IAD
2 stops12h 25m
Delta
Deal found 7/20![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
IAD
- WYS
1 stop7h 27m
Delta
Sat 8/2911:29 am
WYS
- IAD
1 stop6h 30m
Delta
Deal found 7/18![Delta logo]()
$334
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:49 pm
IAD
- MSO
1 stop6h 58m
Delta
Thu 8/271:16 pm
MSO
- IAD
1 stop8h 23m
Delta
Deal found 7/16![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:23 pm
IAD
- BIL
1 stop7h 49m
Delta
Wed 9/96:20 am
BIL
- IAD
1 stop5h 11m
Delta
Deal found 7/17![Delta logo]()
$349
One-way flights from Dulles Intl to MontanaSearch for one-way flight options from Dulles Intl to Montana. Find affordable one-way fares based on user searches. Data last updated July 21, 2026.
Search for one-way flight options from Dulles Intl to Montana. Find affordable one-way fares based on user searches. Data last updated July 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:59 am
IAD
- BZN
1 stop9h 07m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:50 am
IAD
- MSO
1 stop25h 44m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:59 am
IAD
- BZN
1 stop13h 17m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$147
This Trip.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:59 am
IAD
- BZN
2 stops13h 46m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am
IAD
- BZN
1 stop7h 05m
Delta
Deal found 7/17![Delta logo]()
$175
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
IAD
- BIL
1 stop7h 17m
Delta
Deal found 7/18![Delta logo]()
$175
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:00 pm
IAD
- MSO
1 stop11h 30m
United Airlines
Deal found 7/19![United Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
IAD
- BZN
3 stops36h 54m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:59 am
IAD
- BZN
1 stop9h 07m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$179
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
IAD
- BZN
1 stop6h 21m
Delta
Deal found 7/16![Delta logo]()
$180
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm
IAD
- BIL
2 stops8h 00m
Delta
Deal found 7/20![Delta logo]()
$180
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:25 pm
IAD
- MSO
2 stops8h 53m
Delta
Deal found 7/16![Delta logo]()
$180
Find flight deals from Dulles Intl to Montana
Keep the following information in mind while searching for Dulles Intl to Montana flight deals. Data was last updated July 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $334 (Delta) |
One-way from | $98 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $554 |
Good round-trip deal | $507 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Montana that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Montana that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.West Yellowstone
IAD - WYS
IADWYS
Washington, D.C. Dulles Intl
Tue 8/25
6:10 am-12:27 pm
2 stops8h 17m
West Yellowstone
Sat 8/29
11:29 am-7:59 pm
1 stop6h 30m
$344
Washington, D.C.Billings
IAD - BIL
IADBIL
Washington, D.C. Dulles Intl
Sat 11/14
7:46 am-4:32 pm
1 stop10h 46m
Billings Logan Intl
Tue 11/17
6:00 am-4:14 pm
1 stop8h 14m
$351
Washington, D.C.Billings
IAD - BIL
IADBIL
Washington, D.C. Dulles Intl
Thu 8/20
6:49 pm-11:30 pm
1 stop6h 41m
Billings Logan Intl
Tue 8/25
11:51 am-12:34 am
2 stops10h 43m
$354
Washington, D.C.Billings
IAD - BIL
IADBIL
Washington, D.C. Dulles Intl
Fri 11/6
7:25 am-5:39 pm
2 stops12h 14m
Billings Logan Intl
Sat 11/14
6:15 am-6:26 pm
2 stops10h 11m
$359
Washington, D.C.Missoula
IAD - MSO
IADMSO
Washington, D.C. Dulles Intl
Tue 8/18
5:25 pm-12:18 am
2 stops8h 53m
Missoula Johnson-Bell Field
Mon 8/24
6:27 pm-9:20 am
2 stops12h 53m
$359
Washington, D.C.Missoula
IAD - MSO
IADMSO
Washington, D.C. Dulles Intl
Fri 8/28
3:03 pm-12:18 am
2 stops11h 15m
Missoula Johnson-Bell Field
Mon 8/31
5:30 am-8:05 pm
2 stops12h 35m
$359
Quickest round-trip
Washington, D.C.Bozeman
IAD - BZN
IADBZN
Washington, D.C. Dulles Intl
Sat 8/22
8:15 am-10:42 am
Nonstop4h 27m
Bozeman Gallatin Field
Wed 8/26
7:55 am-4:02 pm
1 stop6h 07m
$367
Washington, D.C.Bozeman
IAD - BZN
IADBZN
Washington, D.C. Dulles Intl
Sat 8/22
7:35 pm-8:45 pm
1 stop27h 10m
Bozeman Gallatin Field
Wed 8/26
2:21 pm-5:40 am
1 stop13h 19m
$369
Washington, D.C.Billings
IAD - BIL
IADBIL
Washington, D.C. Dulles Intl
Sat 8/29
12:29 pm-10:53 pm
2 stops12h 24m
Billings Logan Intl
Wed 9/9
6:23 am-1:31 pm
1 stop5h 08m
$379
Washington, D.C.Billings
IAD - BIL
IADBIL
Washington, D.C. Dulles Intl
Sat 8/22
2:23 pm-8:12 pm
1 stop7h 49m
Billings Logan Intl
Sat 9/5
6:26 am-8:05 pm
2 stops11h 39m
$379
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Dulles Intl to Montana
Have a flexible travel schedule? Discover the best time to fly to Montana from Dulles Intl with our price prediction graph.
IAD-WYS
IAD-BIL
IAD-GTF
IAD-MSO
IAD-BZN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Montana
IAD-USMT
IAD-WYS
IAD-BIL
IAD-GTF
IAD-MSO
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Montana?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montana (average of $355). Flying from Washington, D.C. Dulles Intl Airport to Montana in December is currently the most expensive (average of $682). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IAD to MT?
Find hourly flight availability from Dulles Intl to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 21, 2026.
When flying from Washington, D.C. Dulles Intl Airport to Montana, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Montana?
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Montana?
The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Montana may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Montana
Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated July 21, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Montana to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Dulles Intl to Montana
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Montana by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Dulles Intl to Montana by cabin class
Find flights from Dulles Intl to Montana, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Dulles Intl and Montana flights
Browse other Dulles Intl and Montana flight options. Last updated on July 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Dulles Intl to Montana flights
Consider these flights traveling from Dulles Intl to Montana.
Top 4 airlines flying from Dulles Intl to Montana
Discover the top 4 airlines that operate flights from Dulles Intl to Montana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$241 | Average$374 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$493 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$280 | Average$534 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$289 | Average$411 | FlexibilityNo cancel fee | On-timeN/A |