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Dulles Intl

$191+ Cheap flights from Great Falls (GTF) to Dulles Intl (IAD)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — IAD
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheap flight deals from Great Falls to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Dulles Intl (IAD). 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 marzo 25, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$407
(Delta)

One-way from

$191
(Delta)

Popular in

April

Cheapest in

November
Provider with most accurate pricing for Great Falls-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Great Falls-Washington, D.C. Dulles Intl flights.
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From Great Falls to Washington, D.C. Dulles Intl
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One-way flight from Great Falls to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 19% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Find flight deals from Great Falls to Dulles Intl

Cheapest flights from Great Falls to Dulles Intl
Explore the most affordable flight options available from Great Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 25, 2025.

This Delta deal was found by Cheapflights users on 3/23. 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.
sáb. 5/312:00 pmGTF - IAD
2 stops9h 40mDelta
mié. 5/77:45 amIAD - GTF
2 stops11h 51mDelta
Deal found 3/23$407
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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.
sáb. 5/36:07 pmGTF - IAD
1 stop28h 16mAlaska Airlines
mié. 5/77:13 pmIAD - GTF
1 stop24h 14mAlaska Airlines
Deal found 3/23$467
This United deal was found by Cheapflights users on 3/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/32:26 pmGTF - IAD
1 stop6h 46mUnited Airlines
mié. 5/710:10 pmIAD - GTF
2 stops25h 13mUnited Airlines
Deal found 3/23$503

Cheapflights Fare Finder

Customize your flight search to find flights from Great Falls to Dulles Intl 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 marzo 25, 2025.
Use the filters below to find and compare flights from Great Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Great Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

sáb. 5/3

12:00 pm-11:40 pm

2 stops9h 40m

Washington, D.C. Dulles Intl

mié. 5/7

7:45 am-5:36 pm

2 stops11h 51m

$407

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

sáb. 5/3

6:07 pm-12:23 am

1 stop28h 16m

Washington, D.C. Dulles Intl

mié. 5/7

7:13 pm-5:27 pm

1 stop24h 14m

$467

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

sáb. 5/3

2:26 pm-11:12 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

mié. 5/7

10:10 pm-9:23 pm

2 stops25h 13m

$503

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 4/23

6:35 pm-9:18 am

2 stops12h 43m

$191

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mar. 4/22

6:07 pm-7:43 am

1 stop11h 36m

$217

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 4/23

2:20 pm-11:14 pm

1 stop6h 54m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

  • Most accurate provider: When it comes to deals on Great Falls-Washington, D.C. Dulles Intl Airport flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Great Falls-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Great Falls-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Expedia the most. Expedia 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 Great Falls-Washington, D.C. Dulles Intl Airport 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 Great Falls to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Great Falls with our price prediction graph.
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 Great Falls to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated marzo 25, 2025.
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Food

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to Washington, D.C. Dulles Intl?

    For a flight from Great Falls to Washington, D.C. Dulles Intl, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city. Great Falls is the only Great Falls airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 1 airline has flights to Washington, D.C. Dulles Intl from Great Falls on a regular basis.

  • What are the cheapest airlines flying from Great Falls to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Delta is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $407. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at $467 and $503, respectively. Delta is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Great Falls to Washington, D.C. Dulles Intl Airport one-way?

    $191 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $217 and $230, respectively.

  • Can I find deals for flights from Great Falls to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Great Falls to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Dulles Intl.

  • Can I find deals for business class flights from Great Falls to Dulles Intl?

    Yes. Cheapflights offers flight deals from Great Falls to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Great Falls to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Great Falls to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Great Falls to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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.

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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Top airline flying from Great Falls to Dulles Intl

Discover the top airline that operate flights from Great Falls to Dulles Intl. 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$363Average$469FlexibilityNo cancel feeOn-time69%
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