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

According to our current data, Delta ($377), Alaska Airlines ($386), and United Airlines ($486) offers the cheapest pricing from Washington, D.C. to Great Falls. Users have found that Delta is 47% cheaper than the other options available to this destination.

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

The cheapest airlines for a one-way flight from Washington, D.C. to Great Falls are Delta ($227), Hawaiian Airlines ($227), and Alaska Airlines ($241).

What is the cheapest day to fly from Washington, D.C. to Great Falls?

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

What are the most popular routes from Washington, D.C. to Great Falls?

Most travelers choose Washington, D.C. Dulles Intl - Great Falls, Baltimore/Washington - Great Falls or Washington, D.C. Reagan-National - Great Falls when deciding on the best route from Washington, D.C. to Great Falls.

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

Users have found that flying from Washington, D.C. to Great Falls on a Wednesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Washington, D.C. to Great Falls?

Flights from Washington, D.C. to Great Falls lean towards being more expensive in May. Prices are generally better when you fly from Washington, D.C. to Great Falls in February, with the cheapest ticket starting at $510.

Most accurate provider : When it comes to deals on Washington, D.C.-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.-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Great Falls flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Great Falls flights, Cheapflights users trust eDreams the most. eDreams 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.-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

For a flight from Washington, D.C. to Great Falls, you will be flying into 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 inbound flights from Washington, D.C. per day. 2 airlines have flights to Great Falls from Washington, D.C. on a regular basis.

Can I find deals for flights from Washington, D.C. to Great Falls that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to Great Falls?

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

Can I find deals for business class flights from Washington, D.C. to Great Falls?

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

$227+ Flights from Washington, D.C. to Great Falls - Compare & Save Big

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Cheap flight deals from Washington, D.C. to Great Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$377 (Delta)
One-way from	$227 (Delta)
Popular in	May
Cheapest in	February
Average price	$1,124

Provider with most accurate pricing for Washington, D.C. (WAS)-Great Falls flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Great Falls flights.

Search Deals

From Washington, D.C. (WAS) to Great Falls

Search Deals

One-way flight from Washington, D.C. (WAS) to Great Falls

Search Deals

Highest demand for flights based on searches. 25% potential increase in price ($242 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

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Find flight deals from Washington, D.C. to Great Falls

Cheapest flights from Washington, D.C. to Great Falls
Explore the most affordable flight options available from Washington, D.C. to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Wed 6/47:45 amIAD - GTF

2 stops11h 51mDelta

Sat 6/76:19 pmGTF - IAD

2 stops12h 41mDelta

Deal found 4/30

$377

Wed 6/49:00 amIAD - GTF

1 stop9h 29mAlaska Airlines

Sat 6/75:09 pmGTF - IAD

1 stop12h 27mAlaska Airlines

Deal found 4/30

$386

Tue 7/292:53 pmDCA - GTF

1 stop7h 39mDelta

Fri 8/86:00 amGTF - DCA

1 stop5h 58mDelta

Deal found 4/30

$454

Fri 6/611:55 amBWI - GTF

2 stops10h 37mDelta

Sun 6/86:18 pmGTF - BWI

1 stop9h 29mDelta

Deal found 4/30

$466

Thu 8/217:22 pmBWI - GTF

1 stop22h 27mAlaska Airlines

Tue 8/264:29 pmGTF - BWI

1 stop11h 04mAlaska Airlines

Deal found 4/30

$482

Sun 5/257:59 pmIAD - GTF

1 stop19h 28mUnited Airlines

Tue 6/32:26 pmGTF - IAD

1 stop6h 24mUnited Airlines

Deal found 4/30

$486

Sat 6/144:22 pmBWI - GTF

1 stop6h 48mUnited Airlines

Sat 6/216:25 amGTF - BWI

1 stop20h 55mUnited Airlines

Deal found 4/30

$544

Fri 9/54:24 pmDCA - GTF

1 stop7h 04mUnited Airlines

Mon 9/82:35 pmGTF - DCA

1 stop22h 31mUnited Airlines

Deal found 4/30

$556

Wed 7/94:20 pmBWI - GTF

1 stop6h 53mMultiple Airlines

Tue 7/154:55 pmGTF - BWI

1 stop11h 24mMultiple Airlines

Deal found 4/30

$765

Wed 7/28:00 amDCA - GTF

1 stop10h 13mAlaska Airlines

Sun 7/64:55 pmGTF - DCA

1 stop21h 48mAlaska Airlines

Deal found 4/30

$891

Best flights from Washington, D.C. to Great Falls
Discover carefully curated flight deals from Washington, D.C. to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Wed 6/47:45 amIAD - GTF

2 stops11h 51mDelta

Sat 6/76:19 pmGTF - IAD

2 stops12h 41mDelta

Deal found 4/30

$377

Wed 6/49:00 amIAD - GTF

1 stop9h 29mAlaska Airlines

Sat 6/75:09 pmGTF - IAD

1 stop12h 27mAlaska Airlines

Deal found 4/30

$386

Sun 5/257:59 pmIAD - GTF

1 stop19h 28mUnited Airlines

Tue 6/32:26 pmGTF - IAD

1 stop6h 24mUnited Airlines

Deal found 4/30

$486

Wed 7/94:20 pmBWI - GTF

1 stop6h 53mMultiple Airlines

Tue 7/154:55 pmGTF - BWI

1 stop11h 24mMultiple Airlines

Deal found 4/30

$765

Tue 7/292:53 pmDCA - GTF

1 stop7h 39mDelta

Fri 8/86:00 amGTF - DCA

1 stop5h 58mDelta

Deal found 4/30

$454

Thu 8/217:22 pmBWI - GTF

1 stop22h 27mAlaska Airlines

Tue 8/264:29 pmGTF - BWI

1 stop11h 04mAlaska Airlines

Deal found 4/30

$482

Fri 6/611:55 amBWI - GTF

2 stops10h 37mDelta

Sun 6/86:18 pmGTF - BWI

1 stop9h 29mDelta

Deal found 4/30

$466

Sat 6/144:22 pmBWI - GTF

1 stop6h 48mUnited Airlines

Sat 6/216:25 amGTF - BWI

1 stop20h 55mUnited Airlines

Deal found 4/30

$544

Fri 9/54:24 pmDCA - GTF

1 stop7h 04mUnited Airlines

Mon 9/82:35 pmGTF - DCA

1 stop22h 31mUnited Airlines

Deal found 4/30

$556

Wed 7/28:00 amDCA - GTF

1 stop10h 13mAlaska Airlines

Sun 7/64:55 pmGTF - DCA

1 stop21h 48mAlaska Airlines

Deal found 4/30

$891

Last-minute flights from Washington, D.C. to Great Falls
Discover last-minute flight deals from Washington, D.C. to Great Falls. Data last updated May 1, 2025 and is based on user searches.

Thu 5/158:30 amDCA - GTF

2 stops14h 53mUnited Airlines

Mon 5/192:26 pmGTF - DCA

1 stop22h 36mUnited Airlines

Deal found 4/29

$626

Thu 5/158:23 amBWI - GTF

1 stop7h 09mUnited Airlines

Mon 5/192:26 pmGTF - BWI

1 stop6h 51mUnited Airlines

Deal found 4/29

$636

Thu 5/151:53 pmDCA - GTF

2 stops10h 38mDelta

Mon 5/196:19 pmGTF - DCA

2 stops12h 49mDelta

Deal found 4/29

$663

Sun 5/257:59 pmIAD - GTF

1 stop19h 28mUnited Airlines

Tue 6/32:26 pmGTF - IAD

1 stop6h 24mUnited Airlines

Deal found 4/30

$486

Wed 5/287:45 amIAD - GTF

2 stops11h 51mDelta

Sat 5/3111:45 amGTF - IAD

2 stops9h 09mDelta

Deal found 4/30

$429

One-way flights from Washington, D.C. to Great Falls
Search for one-way flight options from Washington, D.C. to Great Falls. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Fri 7/45:45 pmDCA - GTF

1 stop7h 00mDelta

Deal found 4/30

$227

Tue 8/129:00 amIAD - GTF

1 stop9h 13mHawaiian Airlines

Deal found 4/30

$227

Fri 7/41:00 pmIAD - GTF

2 stops11h 45mDelta

Deal found 4/30

$233

Fri 6/611:55 amBWI - GTF

2 stops10h 37mDelta

Deal found 4/30

$236

Tue 8/127:51 amBWI - GTF

1 stop10h 22mAlaska Airlines

Deal found 4/30

$241

Fri 7/46:30 amIAD - GTF

1 stop9h 06mUnited Airlines

Deal found 4/30

$272

Fri 6/68:09 amBWI - GTF

1 stop7h 18mUnited Airlines

Deal found 4/30

$275

Mon 6/238:00 amDCA - GTF

1 stop10h 13mHawaiian Airlines

Deal found 5/1

$375

Mon 6/237:00 pmDCA - GTF

2 stops20h 27mUnited Airlines

Deal found 5/1

$388

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Great Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

Wed 6/4

7:45 am-5:36 pm

2 stops11h 51m

Great Falls

Sat 6/7

6:19 pm-9:00 am

2 stops12h 41m

$377

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

Wed 6/4

9:00 am-4:29 pm

1 stop9h 29m

Great Falls

Sat 6/7

5:09 pm-7:36 am

1 stop12h 27m

$386

Washington, D.C.Great Falls

DCA - GTF

DCAGTF

Washington, D.C. Reagan-National

Tue 7/29

2:53 pm-8:32 pm

1 stop7h 39m

Great Falls

Fri 8/8

6:00 am-1:58 pm

1 stop5h 58m

$454

BaltimoreGreat Falls

BWI - GTF

BWIGTF

Baltimore/Washington

Fri 6/6

11:55 am-8:32 pm

2 stops10h 37m

Great Falls

Sun 6/8

6:18 pm-5:47 am

1 stop9h 29m

$466

BaltimoreGreat Falls

BWI - GTF

BWIGTF

Baltimore/Washington

Thu 8/21

7:22 pm-3:49 pm

1 stop22h 27m

Great Falls

Tue 8/26

4:29 pm-5:33 am

1 stop11h 04m

$482

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

Sun 5/25

7:59 pm-1:27 pm

1 stop19h 28m

Great Falls

Tue 6/3

2:26 pm-10:50 pm

1 stop6h 24m

$486

BaltimoreGreat Falls

BWI - GTF

BWIGTF

Baltimore/Washington

Sat 6/14

4:22 pm-9:10 pm

1 stop6h 48m

Great Falls

Sat 6/21

6:25 am-5:20 am

1 stop20h 55m

$544

Washington, D.C.Great Falls

DCA - GTF

DCAGTF

Washington, D.C. Reagan-National

Fri 9/5

4:24 pm-9:28 pm

1 stop7h 04m

Great Falls

Mon 9/8

2:35 pm-3:06 pm

1 stop22h 31m

$556

BaltimoreGreat Falls

BWI - GTF

BWIGTF

Baltimore/Washington

Wed 7/9

4:20 pm-9:13 pm

1 stop6h 53m

Great Falls

Tue 7/15

4:55 pm-6:19 am

1 stop11h 24m

$765

Washington, D.C.Great Falls

DCA - GTF

DCAGTF

Washington, D.C. Reagan-National

Wed 7/2

8:00 am-4:13 pm

1 stop10h 13m

Great Falls

Sun 7/6

4:55 pm-4:43 pm

1 stop21h 48m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 19 results

Compare providers for flights from Washington, D.C. to Great Falls

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Great Falls in May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C.-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.-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Great Falls flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Great Falls flights, Cheapflights users trust eDreams the most. eDreams 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.-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 Washington, D.C. to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Washington, D.C. 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 Washington, D.C. to Great Falls

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Great Falls (average of $367). Flying from Washington, D.C. to Great Falls in June is currently the most expensive (average of $579). 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 WAS to GTF?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Great Falls at noon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the morning.

Rainfall in Great Falls by month

In terms of precipitation, rainfall in Great Falls ranges from 0.5 - 2.5 inches per month. June is typically the wettest month, when rainfall can reach 2.5 in. January is typically the driest time to visit Great Falls when rainfall is around 0.5 in.

Temperature in Great Falls by month

If weather is an important factor for your trip to Great Falls, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Great Falls

Get a feel of what it's like to fly with Alaska Airlines, Delta and Hawaiian Airlines from Washington, D.C. to Great Falls by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,972 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,934 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.9

Good

2,408 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,972 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly into for flights to Great Falls from Washington, D.C.?
For a flight from Washington, D.C. to Great Falls, you will be flying into 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 inbound flights from Washington, D.C. per day. 2 airlines have flights to Great Falls from Washington, D.C. on a regular basis.
What are the cheapest airlines flying from Washington, D.C. to Great Falls round-trip?
According to our current data, Delta ($377), Alaska Airlines ($386), and United Airlines ($486) offers the cheapest pricing from Washington, D.C. to Great Falls. Users have found that Delta is 47% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Washington, D.C. to Great Falls one-way?
The cheapest airlines for a one-way flight from Washington, D.C. to Great Falls are Delta ($227), Hawaiian Airlines ($227), and Alaska Airlines ($241).
What are the most popular routes from Washington, D.C. to Great Falls?
Most travelers choose Washington, D.C. Dulles Intl - Great Falls, Baltimore/Washington - Great Falls or Washington, D.C. Reagan-National - Great Falls when deciding on the best route from Washington, D.C. to Great Falls.
Can I find deals for flights from Washington, D.C. to Great Falls that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Great Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Great Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Great Falls.
Can I find deals for business class flights from Washington, D.C. to Great Falls?
Yes. Cheapflights offers flight deals from Washington, D.C. to Great Falls 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 Washington, D.C. to Great Falls?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Great Falls (average of $367). Flying from Washington, D.C. to Great Falls in June is currently the most expensive (average of $579). 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

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Top 2 airlines flying from Washington, D.C. to Great Falls

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$384	Average$704	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$396	Average$963	FlexibilityNo cancel fee	On-timeN/A

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$227+ Cheap flights from Washington, D.C. (WAS) to Great Falls (GTF)

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Great Falls with Cheapflights

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Cheap flight deals from Washington, D.C. to Great Falls

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Round-trip from

One-way from

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Find flight deals from Washington, D.C. to Great Falls

Cheapest flights from Washington, D.C. to Great FallsExplore the most affordable flight options available from Washington, D.C. to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Washington, D.C. to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Great Falls that are best for you.

Compare providers for flights from Washington, D.C. to Great Falls

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 Washington, D.C. to Great Falls in May.

Best time to book a flight from Washington, D.C. to Great Falls

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Great Falls

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

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

Find hourly flight availability from Washington, D.C. to Great Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Great Falls by month

Plan your trip to Great Falls by taking into account the average rainfall totals by month.

Temperature in Great Falls by month

Plan your trip to Great Falls by taking into account the average temperature totals by month.

Reviews of airlines servicing Great Falls

Get a feel of what it's like to fly with Alaska Airlines, Delta and Hawaiian Airlines from Washington, D.C. to Great Falls by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Great Falls. 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 into for flights to Great Falls from Washington, D.C.?

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

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

What are the most popular routes from Washington, D.C. to Great Falls?

Can I find deals for flights from Washington, D.C. to Great Falls that include hotel bookings?

How can I find direct flights from Washington, D.C. to Great Falls?

Can I find deals for business class flights from Washington, D.C. to Great Falls?

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

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

Top 2 airlines flying from Washington, D.C. to Great Falls

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Cheapest flights from Washington, D.C. to Great Falls
Explore the most affordable flight options available from Washington, D.C. to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.