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

Flying on Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $362. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $562 and $617, respectively. Alaska Airlines is priced at 42% lower than the current average price of a flight leaving 3 months from now.

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 $389). 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 day to fly from Great Falls to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Great Falls to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday at noon when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Great Falls to Washington, D.C. Dulles Intl Airport?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 67% on your flight compared to booking on days when demand is much higher.

What is the cheapest time of day to fly from GTF to IAD?

One of the essential ways to save on airfare from Great Falls to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 36% on airfare.

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.

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. 2 airlines have flights to Washington, D.C. Dulles Intl from Great Falls on a regular basis.

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.

$300+ Save on Flights from Great Falls to Washington, D.C. Dulles Intl Airport

Q: E

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.

Q: E

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).

Q: E

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.

Q: 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. 2 airlines have flights to Washington, D.C. Dulles Intl from Great Falls on a regular basis.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Great Falls to Dulles Intl 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 Great Falls to Dulles Intl

Most accurate provider	Expedia 1 star
Most trusted provider	Expedia 3 stars
Round-trip from	$362 (Alaska Airlines)
One-way from	$300 (United)
Popular in	February
Cheapest in	November
Average price	$824

Provider with most accurate pricing for Great Falls-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Great Falls-Washington, D.C. Dulles Intl flights.

Search Deals

From Great Falls to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Great Falls to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($36 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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 February 21, 2025.

Tue 4/13:52 pmGTF - IAD

1 stop11h 42mAlaska Airlines

Mon 4/77:00 amIAD - GTF

1 stop10h 12mAlaska Airlines

Deal found 2/19

$362

Mon 5/196:20 pmGTF - IAD

2 stops12h 51mDelta

Tue 5/271:00 pmIAD - GTF

2 stops11h 46mDelta

Deal found 2/19

$562

Mon 3/102:11 pmGTF - IAD

2 stops19h 41mUnited Airlines

Wed 3/268:22 amIAD - GTF

2 stops15h 12mUnited Airlines

Deal found 2/20

$617

Best flights from Great Falls to Dulles Intl
Discover carefully curated flight deals from Great Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 21, 2025.

Tue 4/13:52 pmGTF - IAD

1 stop11h 42mAlaska Airlines

Mon 4/77:00 amIAD - GTF

1 stop10h 12mAlaska Airlines

Deal found 2/19

$362

Mon 5/196:20 pmGTF - IAD

2 stops12h 51mDelta

Tue 5/271:00 pmIAD - GTF

2 stops11h 46mDelta

Deal found 2/19

$562

Mon 3/102:11 pmGTF - IAD

2 stops19h 41mUnited Airlines

Wed 3/268:22 amIAD - GTF

2 stops15h 12mUnited Airlines

Deal found 2/20

$617

Last-minute flights from Great Falls to Dulles Intl
Discover last-minute flight deals from Great Falls to Dulles Intl. Data last updated February 21, 2025 and is based on user searches.

Fri 3/75:59 amGTF - IAD

1 stop5h 48mDelta

Sun 3/163:05 pmIAD - GTF

1 stop7h 30mDelta

Deal found 2/19

$640

Mon 3/102:45 pmGTF - IAD

1 stop12h 47mAlaska Airlines

Wed 3/265:30 pmIAD - GTF

2 stops23h 42mAlaska Airlines

Deal found 2/20

$522

Mon 3/102:11 pmGTF - IAD

2 stops19h 41mUnited Airlines

Wed 3/268:22 amIAD - GTF

2 stops15h 12mUnited Airlines

Deal found 2/20

$617

One-way flights from Great Falls to Dulles Intl
Search for one-way flight options from Great Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 21, 2025.

Fri 4/182:20 pmGTF - IAD

1 stop13h 02mUnited Airlines

Deal found 2/21

$300

Fri 4/183:52 pmGTF - IAD

1 stop11h 42mAlaska Airlines

Deal found 2/20

$413

Find flights from Great Falls to Dulles Intl within your budget

Fly from

Fly to

Route

Depart

Return

Price

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Tue 4/1

3:52 pm-5:34 am

1 stop11h 42m

Washington, D.C. Dulles Intl

Mon 4/7

7:00 am-3:12 pm

1 stop10h 12m

$362

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 5/19

6:20 pm-9:11 am

2 stops12h 51m

Washington, D.C. Dulles Intl

Tue 5/27

1:00 pm-10:46 pm

2 stops11h 46m

$562

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 3/10

2:11 pm-11:52 am

2 stops19h 41m

Washington, D.C. Dulles Intl

Wed 3/26

8:22 am-9:34 pm

2 stops15h 12m

$617

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Fri 4/18

2:20 pm-5:22 am

1 stop13h 02m

$300

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Fri 4/18

3:52 pm-5:34 am

1 stop11h 42m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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.

Travel insights for flights from Great Falls to Dulles Intl

Get recent, data-driven insights about flights from Great Falls to Dulles Intl including ideal travel times, pricing trends, and more.

Rainfall in Dulles Intl 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

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

Alaska Airlines

8.0

Very good

9,697 reviews

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

9,697 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

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

8,217 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

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

8,760 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

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

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. 2 airlines have 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 Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $362. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $562 and $617, respectively. Alaska Airlines is priced at 42% lower than the current average price of a flight leaving 3 months from now.
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 $389). 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

Arlington

Alexandria

Fairfax

Springfield

Rockville

Tysons

Gaithersburg

Silver Spring

Fredericksburg

Linthicum Heights

Laurel

Falls Church

Woodbridge

Sterling

Easton

Herndon

Bowie

Reston

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Great Falls to Dulles Intl

Complete your trip

Washington, D.C. Dulles Intl Airport car rentals

Washington, D.C. car rentals

Dupont Circle car rentals

Capitol Hill car rentals

Georgetown car rentals

Downtown car rentals

Foggy Bottom - West End car rentals

Southwest Waterfront car rentals

Columbia Heights car rentals

Adams Morgan car rentals

Anacostia car rentals

Shaw car rentals

Other flights to Dulles Intl

South Bend to Dulles Intl flights

Atlanta to Dulles Intl flights

Orlando to Dulles Intl flights

Tampa to Dulles Intl flights

New Haven to Dulles Intl flights

Sarasota to Dulles Intl flights

Washington, D.C. Dulles Intl Airport to Dubai flights

Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport flights

Washington, D.C. Dulles Intl Airport to New Haven flights

Washington, D.C. Dulles Intl Airport to South Bend flights

Washington, D.C. Dulles Intl Airport to Tampa flights

Washington, D.C. Dulles Intl Airport to South Bend flights

Washington, D.C. Dulles Intl Airport to Orlando Airport flights

Washington, D.C. Dulles Intl Airport to New Haven flights

Washington, D.C. Dulles Intl Airport to Savannah flights

Washington, D.C. Dulles Intl Airport to Sarasota flights

Washington, D.C. Dulles Intl Airport to Lancaster, Pennsylvania flights

Washington, D.C. Dulles Intl Airport to Orlando Airport flights

Washington, D.C. Dulles Intl Airport to Atlanta flights

Washington, D.C. Dulles Intl Airport to Ogdensburg flights

Washington, D.C. Dulles Intl Airport to New York John F Kennedy Intl Airport flights

Washington, D.C. Dulles Intl Airport to DuBois, Pennsylvania flights

Washington, D.C. Dulles Intl Airport to Tampa flights

Washington, D.C. Dulles Intl Airport to Atlanta flights

Top 2 airlines flying from Great Falls to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$334	Average$587	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$363	Average$469	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$300+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Great Falls to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Great Falls to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Great Falls to Dulles Intl

Cheapest flights from Great Falls to Dulles IntlExplore 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 February 21, 2025.

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 February 21, 2025.

Find flights from Great Falls to Dulles Intl within your budget

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.

Travel insights for flights from Great Falls to Dulles Intl

Get recent, data-driven insights about flights from Great Falls to Dulles Intl including ideal travel times, pricing trends, and more.

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

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

Reviews of airlines servicing Dulles Intl

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?

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

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

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

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

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

Traveling to a place near Great Falls?

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 for Great Falls to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Great Falls to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 February 21, 2025.