$229+ Cheap flights from Dulles Intl (IAD) to Great Falls (GTF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — GTF
Nov 20 — Nov 271
Round-trip
1 adult, Economy
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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
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Cheapest flights from Dulles Intl to Great FallsExplore the most affordable flight options available from Dulles Intl to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
Explore the most affordable flight options available from Dulles Intl to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/94:21 pm -
1 stop6h 52m
Mon 12/142:47 pm -
1 stop6h 28m
Deal found 10/21![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 10/21. 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 12/47:00 am -
1 stop7h 39m
Sat 12/126:19 pm -
2 stops12h 57m
Deal found 10/21![Delta logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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.
Fri 12/257:05 am -
1 stop11h 27m
Sun 1/35:12 pm -
1 stop10h 33m
Deal found 10/20![Alaska Airlines logo]()
$418
This Delta deal was found by Cheapflights users on 10/21. 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 11/76:13 am -
1 stop8h 25m
Fri 11/131:21 pm -
1 stop8h 26m
Deal found 10/21![Delta logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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.
Sun 11/157:05 am -
1 stop11h 25m
Sat 11/214:41 pm -
1 stop10h 59m
Deal found 10/18![Alaska Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 10/17. 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 11/46:05 am -
2 stops8h 33m
Wed 11/111:21 pm -
1 stop8h 26m
Deal found 10/17![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 10/17. 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 11/16:13 am -
1 stop8h 25m
Sat 11/141:21 pm -
2 stops9h 20m
Deal found 10/17![Delta logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Mon 11/25:17 pm -
1 stop25h 13m
Fri 11/65:10 pm -
1 stop10h 34m
Deal found 10/17![Alaska Airlines logo]()
$458
Best flights from Dulles Intl to Great FallsDiscover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
Discover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
This Delta deal was found by Cheapflights users on 10/21. 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 12/87:00 am -
1 stop7h 39m
Sat 12/126:19 pm -
2 stops12h 57m
Deal found 10/21![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Fri 11/66:10 am -
1 stop9h 39m
Fri 11/132:45 pm -
1 stop6h 30m
Deal found 10/20![United Airlines logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 10/19. 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.
Fri 12/47:00 am -
1 stop11h 11m
Sat 12/195:12 pm -
1 stop10h 33m
Deal found 10/19![Alaska Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 10/20. 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 12/47:00 am -
1 stop7h 39m
Sat 12/126:19 pm -
2 stops12h 57m
Deal found 10/20![Delta logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Mon 11/25:17 pm -
1 stop25h 13m
Fri 11/65:10 pm -
1 stop10h 34m
Deal found 10/17![Alaska Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 10/21. 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 11/76:05 am -
2 stops8h 33m
Fri 11/136:19 pm -
2 stops14h 59m
Deal found 10/21![Delta logo]()
$434
This United Airlines deal was found by Cheapflights users on 10/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/82:11 pm -
1 stop9h 31m
Tue 1/126:25 am -
1 stop8h 45m
Deal found 10/16![United Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 10/21. 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 2/257:30 am -
2 stops12h 13m
Tue 3/21:10 pm -
1 stop8h 36m
Deal found 10/21![Delta logo]()
$444
Last-minute flights from Dulles Intl to Great FallsDiscover last-minute flight deals from Dulles Intl to Great Falls. Data last updated October 21, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Great Falls. Data last updated October 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/19. 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.
Fri 10/306:13 am -
1 stop8h 25m
Fri 11/131:21 pm -
1 stop8h 26m
Deal found 10/19![Delta logo]()
$468
This Delta deal was found by Cheapflights users on 10/17. 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 11/16:13 am -
1 stop8h 25m
Sat 11/141:21 pm -
2 stops9h 20m
Deal found 10/17![Delta logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Mon 11/25:17 pm -
1 stop25h 13m
Fri 11/65:10 pm -
1 stop10h 34m
Deal found 10/17![Alaska Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 10/17. 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 11/46:05 am -
2 stops8h 33m
Wed 11/111:21 pm -
1 stop8h 26m
Deal found 10/17![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 10/21. 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 11/56:13 am -
1 stop8h 25m
Mon 11/96:19 pm -
2 stops12h 50m
Deal found 10/21![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 10/21. 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 11/76:13 am -
1 stop8h 25m
Fri 11/131:21 pm -
1 stop8h 26m
Deal found 10/21![Delta logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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 11/147:46 am -
1 stop10h 44m
Sat 11/214:41 pm -
1 stop10h 59m
Deal found 10/17![Alaska Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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.
Sun 11/157:05 am -
1 stop11h 25m
Sat 11/214:41 pm -
1 stop10h 59m
Deal found 10/18![Alaska Airlines logo]()
$448
One-way flights from Dulles Intl to Great FallsSearch for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated October 21, 2026.
Search for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated October 21, 2026.
This Priceline deal was found by Cheapflights users on 10/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:46 am -
1 stop10h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Alaska Airlines logo]()
$229
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/72:05 pm -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 10/20. 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 11/612:30 pm -
2 stops12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$262
This Delta deal was found by Cheapflights users on 10/17. 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 12/1912:36 pm -
2 stops11h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 10/20. 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 10/276:13 am -
1 stop8h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$305
This Priceline deal was found by Cheapflights users on 10/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:38 am -
1 stop8h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Fri 11/62:05 pm -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$316
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 12/217:05 am -
1 stop11h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Fri 11/66:07 pm -
3 stops40h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 10/20. 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.
Sun 11/86:05 am -
2 stops8h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$400
Find flight deals from Dulles Intl to Great Falls
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Great Falls (GTF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $388 (Delta) |
One-way from | $229 (Alaska Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Great Falls 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 7,457,451 searches. Data last updated October 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Great Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Sun 11/8
7:05 am-4:30 pm
1 stop11h 25m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$229
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Sat 11/7
6:00 am-5:47 pm
2 stops13h 47m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$262
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Fri 12/18
7:05 am-4:32 pm
1 stop11h 27m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$344
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Tue 10/27
12:27 pm-10:29 pm
2 stops12h 02m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$350
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Sun 12/20
5:31 pm-4:32 pm
1 stop25h 01m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$350
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Tue 12/8
7:00 am-12:39 pm
1 stop7h 39m
Great Falls
Sat 12/12
6:19 pm-9:16 am
2 stops12h 57m
$394
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Fri 12/4
7:00 am-12:39 pm
1 stop7h 39m
Great Falls
Sat 12/12
6:19 pm-9:16 am
2 stops12h 57m
$394
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Sat 12/19
5:31 pm-4:32 pm
1 stop25h 01m
Great Falls
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$422
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Fri 11/6
6:10 am-1:49 pm
1 stop9h 39m
Great Falls
Fri 11/13
2:45 pm-11:15 pm
1 stop6h 30m
$423
Washington, D.C.Great Falls
IAD Washington, D.C. Dulles Intl - GTF Great Falls
IADGTF
Washington, D.C. Dulles Intl
Sat 11/7
6:05 am-12:38 pm
2 stops8h 33m
Great Falls
Fri 11/13
6:19 pm-11:18 am
2 stops14h 59m
$434
Showing 1-10 of 16 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Great Falls flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Dulles Intl to Great Falls
Have a flexible travel schedule? Discover the best time to fly to Great Falls from Dulles Intl with our price prediction graph.
IAD-GTF
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.
Reviews of airlines servicing Great Falls
Get insights into the airlines that provide service to Great Falls. 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 Great Falls. Reviews last updated October 21, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Great Falls, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Overall
7.3
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Food
6.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Overall
7.3
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Great Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Great Falls
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Dulles Intl and Great Falls flights
Browse other Dulles Intl and Great Falls flight options. Last updated on October 21, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on October 21, 2026.
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Top airline flying from Dulles Intl to Great Falls
Discover the top airline that operate flights from Dulles Intl to Great Falls. 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 7,457,451 searches. Data last updated October 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$254 | Average$429 | FlexibilityNo cancel fee | On-time69% |