What are the cheapest airlines to fly from Montana to Washington, D.C. Reagan-National Airport one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $110. Alaska Airlines flights start at $128 while deals on Delta start at $134 one-way.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National 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. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National 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).

What are the most popular routes from Montana to Washington, D.C. Reagan-National Airport?

While some choose either Great Falls - Washington, D.C. Reagan-National or Missoula Johnson-Bell Field - Washington, D.C. Reagan-National, Bozeman Gallatin Field - Washington, D.C. Reagan-National is the most popular route from Montana to Washington, D.C. Reagan-National Airport.

What are the most popular airlines that fly from Montana to Washington, D.C. Reagan-National Airport?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Montana to Washington, D.C. Reagan-National Airport.

How far in advance should I book a flight from Montana to Washington, D.C. Reagan-National Airport?

To save on the cost of your flight from Montana to Washington, D.C. Reagan-National Airport, book at least 60 days before your planned departure. Booking around this time can save you about 113% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $380 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $663.

What is the cheapest month to fly from Montana to Washington, D.C. Reagan-National Airport?

Our data shows that June tends to be the cheapest month to fly to Washington, D.C. Reagan-National Airport from Montana. Users have commonly found prices around $395 for the month, but tickets can be as low as $249. Due to multiple factors, prepare for potentially higher prices in August.

Can I find deals for flights from Montana to Reagan-National that include hotel bookings?

Yes. In addition to deals on Montana to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Montana to Reagan-National?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Reagan-National.

Can I find deals for business class flights from Montana to Reagan-National?

Yes. Cheapflights offers flight deals from Montana to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$110+ Flights from Montana to Washington, D.C. Reagan-National Airport

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

Find cheap flights from Montana to Reagan-National 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 Montana to Reagan-National

Round-trip from	$262 (Delta)
One-way from	$110 (Priceline)
Popular in	August
Cheapest in	June
Average price	$428

From Montana to Washington, D.C. Reagan-National

Search Deals

One-way flight from Montana to Washington, D.C. Reagan-National

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Montana to Reagan-National

Cheapest flights from Montana to Reagan-National
Explore the most affordable flight options available from Montana to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Wed 10/12:19 pmBZN - DCA

1 stop7h 23mDelta

Wed 10/83:05 pmDCA - BZN

2 stops10h 53mDelta

Deal found 6/30

$262

Fri 9/193:04 pmBZN - DCA

1 stop6h 22mAmerican Airlines

Mon 9/226:30 amDCA - BZN

1 stop8h 19mAmerican Airlines

Deal found 6/30

$289

Wed 9/241:51 pmMSO - DCA

1 stop9h 09mAmerican Airlines

Sun 9/285:08 pmDCA - MSO

1 stop8h 10mAmerican Airlines

Deal found 6/30

$289

Wed 9/245:45 amMSO - DCA

2 stops11h 14mDelta

Sun 9/286:00 amDCA - MSO

2 stops10h 38mDelta

Deal found 6/30

$300

Sun 11/25:00 amBZN - DCA

2 stops7h 20mSouthwest

Wed 11/53:45 pmDCA - BZN

2 stops9h 00mSouthwest

Deal found 6/30

$313

Wed 8/206:50 amFCA - DCA

2 stops10h 06mDelta

Wed 8/276:55 pmDCA - FCA

1 stop6h 58mDelta

Deal found 6/30

$324

Wed 9/36:00 amGTF - DCA

1 stop5h 55mDelta

Sat 9/62:50 pmDCA - GTF

1 stop7h 44mDelta

Deal found 6/30

$328

Mon 8/412:40 pmMSO - DCA

1 stop7h 17mFrontier

Mon 8/117:00 amDCA - MSO

1 stop6h 54mFrontier

Deal found 6/30

$356

Wed 8/275:49 amBIL - DCA

1 stop10h 38mAmerican Airlines

Wed 9/312:25 pmDCA - BIL

1 stop10h 32mAmerican Airlines

Deal found 6/30

$375

Fri 8/112:34 pmBZN - DCA

1 stop8h 08mUnited Airlines

Mon 8/44:17 pmDCA - BZN

1 stop7h 15mUnited Airlines

Deal found 7/1

$379

Fri 8/153:49 pmFCA - DCA

1 stop7h 27mAmerican Airlines

Fri 8/2210:55 amDCA - FCA

1 stop7h 19mAmerican Airlines

Deal found 6/30

$381

Wed 9/2411:26 amBZN - DCA

1 stop8h 18mHawaiian Airlines

Mon 9/295:49 pmDCA - BZN

1 stop8h 23mHawaiian Airlines

Deal found 6/30

$387

Best flights from Montana to Reagan-National
Discover carefully curated flight deals from Montana to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Wed 10/12:19 pmBZN - DCA

1 stop7h 23mDelta

Wed 10/83:05 pmDCA - BZN

2 stops10h 53mDelta

Deal found 6/30

$262

Fri 9/193:04 pmBZN - DCA

1 stop6h 22mAmerican Airlines

Mon 9/226:30 amDCA - BZN

1 stop8h 19mAmerican Airlines

Deal found 6/30

$289

Sun 11/25:00 amBZN - DCA

2 stops7h 20mSouthwest

Wed 11/53:45 pmDCA - BZN

2 stops9h 00mSouthwest

Deal found 6/30

$313

Mon 8/412:40 pmMSO - DCA

1 stop7h 17mFrontier

Mon 8/117:00 amDCA - MSO

1 stop6h 54mFrontier

Deal found 6/30

$356

Fri 8/110:35 amBZN - DCA

1 stop6h 27mUnited Airlines

Sun 8/103:30 pmDCA - BZN

1 stop8h 53mUnited Airlines

Deal found 7/1

$379

Wed 9/2411:26 amBZN - DCA

1 stop8h 18mHawaiian Airlines

Mon 9/295:49 pmDCA - BZN

1 stop8h 23mHawaiian Airlines

Deal found 6/30

$387

Mon 8/118:00 pmFCA - DCA

2 stops13h 00mAlaska Airlines

Tue 8/198:59 amDCA - FCA

1 stop11h 21mAlaska Airlines

Deal found 6/30

$425

Wed 9/241:51 pmMSO - DCA

1 stop9h 09mAmerican Airlines

Sun 9/285:08 pmDCA - MSO

1 stop8h 10mAmerican Airlines

Deal found 6/30

$289

Wed 9/245:45 amMSO - DCA

2 stops11h 14mDelta

Sun 9/286:00 amDCA - MSO

2 stops10h 38mDelta

Deal found 6/30

$300

Wed 8/206:50 amFCA - DCA

2 stops10h 06mDelta

Wed 8/276:55 pmDCA - FCA

1 stop6h 58mDelta

Deal found 6/30

$324

Wed 9/36:00 amGTF - DCA

1 stop5h 55mDelta

Sat 9/62:50 pmDCA - GTF

1 stop7h 44mDelta

Deal found 6/30

$328

Wed 7/166:15 amMSO - DCA

1 stop6h 50mUnited Airlines

Sun 7/206:25 amDCA - MSO

1 stop7h 13mUnited Airlines

Deal found 7/1

$401

Last-minute flights from Montana to Reagan-National
Discover last-minute flight deals from Montana to Reagan-National. Data last updated July 1, 2025 and is based on user searches.

Tue 7/85:00 amBZN - DCA

2 stops8h 15mSouthwest

Tue 7/84:55 pmDCA - BZN

1 stop9h 50mSouthwest

Deal found 6/29

$534

Tue 7/87:00 amBZN - DCA

1 stop6h 05mMultiple Airlines

Tue 7/85:43 pmDCA - BZN

1 stop8h 28mMultiple Airlines

Deal found 6/29

$854

Tue 7/86:33 amFCA - DCA

1 stop8h 10mHawaiian Airlines

Wed 7/95:02 pmDCA - FCA

1 stop8h 57mHawaiian Airlines

Deal found 6/30

$2,536

Wed 7/95:45 amGTF - DCA

1 stop9h 01mDelta

Sun 7/135:59 pmDCA - GTF

1 stop6h 46mDelta

Deal found 6/30

$946

Thu 7/1011:16 amBZN - DCA

1 stop8h 43mHawaiian Airlines

Wed 7/165:02 pmDCA - BZN

1 stop8h 57mHawaiian Airlines

Deal found 7/1

$759

Wed 7/166:15 amMSO - DCA

1 stop6h 50mUnited Airlines

Sun 7/206:25 amDCA - MSO

1 stop7h 13mUnited Airlines

Deal found 7/1

$401

Fri 8/112:34 pmBZN - DCA

1 stop8h 08mUnited Airlines

Fri 8/86:00 pmDCA - BZN

1 stop6h 23mUnited Airlines

Deal found 7/1

$379

Mon 8/412:40 pmMSO - DCA

1 stop7h 17mFrontier

Mon 8/117:00 amDCA - MSO

1 stop6h 54mFrontier

Deal found 6/30

$356

Mon 8/44:30 pmBZN - DCA

1 stop14h 35mAmerican Airlines

Wed 8/611:30 amDCA - BZN

1 stop9h 25mAmerican Airlines

Deal found 7/1

$396

Tue 8/55:30 amBZN - DCA

2 stops10h 29mDelta

Wed 8/68:59 amDCA - BZN

2 stops11h 46mDelta

Deal found 7/1

$267

Mon 8/116:05 amGTF - DCA

1 stop26h 59mDelta

Tue 8/195:20 pmDCA - GTF

1 stop7h 25mDelta

Deal found 6/30

$423

Wed 8/135:54 amMSO - DCA

1 stop5h 49mDelta

Mon 8/256:55 pmDCA - MSO

1 stop6h 54mDelta

Deal found 7/1

$341

One-way flights from Montana to Reagan-National
Search for one-way flight options from Montana to Reagan-National. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Fri 7/1112:40 pmMSO - DCA

1 stop7h 17mFrontier

Deal found 6/30

$110

Tue 8/2611:26 amBZN - DCA

1 stop8h 18mAlaska Airlines

Deal found 7/1

$128

Tue 8/266:05 amBZN - DCA

2 stops10h 51mDelta

Deal found 7/1

$134

Sat 9/611:26 amBZN - DCA

1 stop8h 18mHawaiian Airlines

Deal found 7/1

$144

Wed 9/246:35 amMSO - DCA

1 stop8h 14mHawaiian Airlines

Deal found 6/30

$144

Fri 8/153:49 pmFCA - DCA

1 stop7h 27mAmerican Airlines

Deal found 6/30

$146

Wed 9/246:40 amMSO - DCA

2 stops8h 39mAmerican Airlines

Deal found 6/30

$150

Fri 9/191:39 pmBZN - DCA

1 stop6h 21mAmerican Airlines

Deal found 6/30

$155

Tue 7/156:00 amBZN - DCA

1 stop8h 55mSouthwest

Deal found 6/30

$168

Wed 7/235:30 amMSO - DCA

1 stop9h 16mDelta

Deal found 6/30

$171

Sat 8/305:20 amFCA - DCA

2 stops13h 59mDelta

Deal found 6/30

$179

Sat 8/306:35 amMSO - DCA

1 stop8h 14mAlaska Airlines

Deal found 7/1

$196

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montana to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Wed 10/1

2:19 pm-11:42 pm

1 stop7h 23m

Washington, D.C. Reagan-National

Wed 10/8

3:05 pm-11:58 pm

2 stops10h 53m

$262

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Fri 9/19

3:04 pm-11:26 pm

1 stop6h 22m

Washington, D.C. Reagan-National

Mon 9/22

6:30 am-12:49 pm

1 stop8h 19m

$289

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

Wed 9/24

1:51 pm-1:00 am

1 stop9h 09m

Washington, D.C. Reagan-National

Sun 9/28

5:08 pm-11:18 pm

1 stop8h 10m

$289

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

Wed 9/24

5:45 am-6:59 pm

2 stops11h 14m

Washington, D.C. Reagan-National

Sun 9/28

6:00 am-2:38 pm

2 stops10h 38m

$300

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Sun 11/2

5:00 am-2:20 pm

2 stops7h 20m

Washington, D.C. Reagan-National

Wed 11/5

3:45 pm-10:45 pm

2 stops9h 00m

$313

KalispellWashington, D.C.

FCA - DCA

FCADCA

Kalispell Glacier Park

Wed 8/20

6:50 am-6:56 pm

2 stops10h 06m

Washington, D.C. Reagan-National

Wed 8/27

6:55 pm-11:53 pm

1 stop6h 58m

$324

Great FallsWashington, D.C.

GTF - DCA

GTFDCA

Great Falls

Wed 9/3

6:00 am-1:55 pm

1 stop5h 55m

Washington, D.C. Reagan-National

Sat 9/6

2:50 pm-8:34 pm

1 stop7h 44m

$328

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

Mon 8/4

12:40 pm-9:57 pm

1 stop7h 17m

Washington, D.C. Reagan-National

Mon 8/11

7:00 am-11:54 am

1 stop6h 54m

$356

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Wed 8/27

5:49 am-6:27 pm

1 stop10h 38m

Washington, D.C. Reagan-National

Wed 9/3

12:25 pm-8:57 pm

1 stop10h 32m

$375

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Fri 8/1

12:34 pm-10:42 pm

1 stop8h 08m

Washington, D.C. Reagan-National

Fri 8/8

6:00 pm-10:23 pm

1 stop6h 23m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 46 results

...

Best time to book a flight from Montana to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Montana 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 Montana to Washington, D.C. Reagan-National Airport

What is the cheapest month to book a flight from Montana to Washington, D.C. Reagan-National Airport?

Currently, February is the cheapest month in which you can book a flight from Montana to Washington, D.C. Reagan-National Airport (average of $278). Flying from Montana to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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 MT to DCA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montana to Washington, D.C. Reagan-National Airport as you normally would.

Reviews of airlines servicing Reagan-National

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Montana to Washington, D.C. Reagan-National Airport by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 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

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,273 reviews

Alaska Airlines

8.0

Very good

10,000 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

7,973 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,539 reviews

Alaska Airlines

8.0

Very good

10,000 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

8,858 reviews

Alaska Airlines

8.0

Very good

10,000 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 are the cheapest airlines to fly from Montana to Washington, D.C. Reagan-National Airport one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $110. Alaska Airlines flights start at $128 while deals on Delta start at $134 one-way.
What are the most popular routes from Montana to Washington, D.C. Reagan-National Airport?
While some choose either Great Falls - Washington, D.C. Reagan-National or Missoula Johnson-Bell Field - Washington, D.C. Reagan-National, Bozeman Gallatin Field - Washington, D.C. Reagan-National is the most popular route from Montana to Washington, D.C. Reagan-National Airport.
Can I find deals for flights from Montana to Reagan-National that include hotel bookings?
Yes. In addition to deals on Montana to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Montana to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Reagan-National.
Can I find deals for business class flights from Montana to Reagan-National?
Yes. Cheapflights offers flight deals from Montana to Reagan-National 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 Montana to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Montana to Washington, D.C. Reagan-National Airport (average of $278). Flying from Montana to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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

Woodbridge

Alexandria

Tysons

Silver Spring

Fredericksburg

Linthicum Heights

Gaithersburg

Fairfax

Easton

Towson

Waldorf

Laurel

Falls Church

Rockville

Springfield

National Harbor

Manassas

Dundalk

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Montana to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$256	Average$579	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$313	Average$520	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$332	Average$563	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.

$110+ Cheap flights from Montana to Reagan-National (DCA)

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Montana to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Montana to Reagan-National

Keep the following information in mind while searching for Montana to Reagan-National flight deals. Data was last updated July 1, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Montana to Reagan-National

Cheapest flights from Montana to Reagan-NationalExplore the most affordable flight options available from Montana to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Montana to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montana to Washington, D.C. Reagan-National Airport that are best for you.

Best time to book a flight from Montana to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Montana with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Montana to Washington, D.C. Reagan-National Airport

What is the cheapest month to book a flight from Montana to Washington, D.C. Reagan-National Airport?

What is the cheapest time of day to fly from MT to DCA?

Find hourly flight availability from Montana to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

Reviews of airlines servicing Reagan-National

Related info for your journey

Find useful and relevant information for your journey from Montana to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Montana to Washington, D.C. Reagan-National Airport one-way?

What are the most popular routes from Montana to Washington, D.C. Reagan-National Airport?

Can I find deals for flights from Montana to Reagan-National that include hotel bookings?

How can I find direct flights from Montana to Reagan-National?

Can I find deals for business class flights from Montana to Reagan-National?

What is the cheapest month to book a flight from Montana to Washington, D.C. Reagan-National Airport?

Traveling to a place near Montana?

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 Montana to Reagan-National

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

Top 3 airlines flying from Montana to Reagan-National

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Montana to Reagan-National
Explore the most affordable flight options available from Montana to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.