$181+ Cheap flights from Dulles Intl (IAD) to Billings (BIL)
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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BIL
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Billings 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
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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 Billings
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Best
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One-way
Cheapest flights from Dulles Intl to BillingsExplore the most affordable flight options available from Dulles Intl to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Dulles Intl to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 11/147:18 am -
1 stop7h 35m
Wed 11/181:23 pm -
1 stop8h 07m
Deal found 9/3![American Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/246:42 am -
1 stop8h 09m
Sat 10/316:00 am -
2 stops10h 45m
Deal found 9/6![American Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 9/6. 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 11/147:00 am -
1 stop7h 18m
Wed 11/186:34 am -
2 stops11h 36m
Deal found 9/6![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Sun 11/12:42 pm -
1 stop7h 58m
Sat 11/71:23 pm -
1 stop8h 07m
Deal found 9/7![American Airlines logo]()
$398
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 9/264:56 pm -
1 stop7h 14m
Sat 10/37:00 am -
2 stops13h 51m
Deal found 9/5![American Airlines logo]()
$447
This Delta deal was found by Cheapflights users on 9/7. 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 05m
Sat 11/712:58 pm -
2 stops8h 28m
Deal found 9/7![Delta logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/55:26 pm -
1 stop6h 41m
Mon 9/142:29 pm -
1 stop8h 03m
Deal found 9/4![United Airlines logo]()
$483
Best flights from Dulles Intl to BillingsDiscover carefully curated flight deals from Dulles Intl to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Dulles Intl to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Delta deal was found by Cheapflights users on 9/3. 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 11/142:30 pm -
1 stop7h 07m
Wed 11/186:34 am -
2 stops7h 25m
Deal found 9/3![Delta logo]()
$364
This Delta deal was found by Cheapflights users on 9/7. 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 05m
Sat 11/712:58 pm -
2 stops8h 28m
Deal found 9/7![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 9/4. 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 9/216:47 pm -
1 stop6h 28m
Fri 9/256:33 pm -
2 stops15h 12m
Deal found 9/4![Delta logo]()
$569
Last-minute flights from Dulles Intl to BillingsDiscover last-minute flight deals from Dulles Intl to Billings. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Billings. Data last updated September 8, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/55:26 pm -
1 stop6h 41m
Mon 9/142:29 pm -
1 stop8h 03m
Deal found 9/4![United Airlines logo]()
$483
This Delta deal was found by Cheapflights users on 9/4. 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 9/52:54 pm -
2 stops9h 59m
Mon 9/146:33 pm -
2 stops15h 12m
Deal found 9/4![Delta logo]()
$513
This Delta deal was found by Cheapflights users on 9/6. 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 9/1512:26 pm -
2 stops12h 49m
Mon 9/216:33 pm -
2 stops15h 12m
Deal found 9/6![Delta logo]()
$563
This United Airlines deal was found by Cheapflights users on 9/6. 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 9/196:15 am -
1 stop6h 47m
Mon 9/212:29 pm -
1 stop8h 03m
Deal found 9/6![United Airlines logo]()
$558
This Delta deal was found by Cheapflights users on 9/4. 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 9/216:47 pm -
1 stop6h 28m
Fri 9/256:33 pm -
2 stops15h 12m
Deal found 9/4![Delta logo]()
$569
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 9/264:56 pm -
1 stop7h 14m
Sat 10/37:00 am -
2 stops13h 51m
Deal found 9/5![American Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/246:42 am -
1 stop8h 09m
Sat 10/311:21 pm -
1 stop8h 02m
Deal found 9/6![American Airlines logo]()
$359
One-way flights from Dulles Intl to BillingsSearch for one-way flight options from Dulles Intl to Billings. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Dulles Intl to Billings. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/63:08 pm -
1 stop8h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$181
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/156:52 am -
1 stop7h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$225
This Delta deal was found by Cheapflights users on 9/6. 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 9/206:47 pm -
1 stop6h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$235
This Delta deal was found by Cheapflights users on 9/7. 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 9/1512:26 pm -
2 stops12h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$239
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 11/205:16 pm -
1 stop8h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Alaska Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 9/6. 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 9/306:47 pm -
1 stop6h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 9/1711:12 am -
2 stops31h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$313
Find flight deals from Dulles Intl to Billings
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Billings (BIL). 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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (American Airlines) |
One-way from | $181 (American Airlines) |
Popular in | July |
Cheapest in | April |
Average price | $825 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Billings 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 September 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Billings that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Tue 9/15
6:52 am-12:43 pm
1 stop7h 51m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$225
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Tue 9/15
12:26 pm-10:34 pm
2 stops12h 08m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$239
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Fri 11/20
5:16 pm-11:58 pm
1 stop8h 42m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$269
Quickest round-trip
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Wed 9/30
6:47 pm-11:15 pm
1 stop6h 28m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$270
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Thu 9/17
11:12 am-4:21 pm
2 stops31h 09m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$313
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Fri 11/20
10:11 am-7:37 pm
2 stops11h 26m
Billings Logan Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$345
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Sat 11/14
2:30 pm-7:37 pm
1 stop7h 07m
Billings Logan Intl
Wed 11/18
6:34 am-3:59 pm
2 stops7h 25m
$364
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Sun 11/1
6:13 am-12:18 pm
1 stop8h 05m
Billings Logan Intl
Sat 11/7
12:58 pm-11:26 pm
2 stops8h 28m
$454
Washington, D.C.Billings
IAD Washington, D.C. Dulles Intl - BIL Billings Logan Intl
IADBIL
Washington, D.C. Dulles Intl
Mon 9/21
6:47 pm-11:15 pm
1 stop6h 28m
Billings Logan Intl
Fri 9/25
6:33 pm-11:45 am
2 stops15h 12m
$569
Sorted by cheapest first
Compare providers for flights from Dulles Intl to Billings
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Billings in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Billings 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-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Billings 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-Billings 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-Billings 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 Billings
Have a flexible travel schedule? Discover the best time to fly to Billings from Dulles Intl with our price prediction graph.
IAD-BIL
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 Billings
Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated September 8, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Billings, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Food
6.7
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 Billings. 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 Billings
Explore flights to Billings departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Complete your trip
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Dulles Intl and Billings flights
Browse other Dulles Intl and Billings flight options. Last updated on September 8, 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 September 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Dulles Intl to Billings
Discover the top airline that operate flights from Dulles Intl to Billings. 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 September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$333 | Average$550 | FlexibilityNo cancel fee | On-time69% |