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

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $52. Users have also found prices from $59 and $90 on Frontier and American Airlines, respectively.

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

When deciding which route to take from Washington, D.C. to Oklahoma consider Washington, D.C. Dulles Intl - Dallas/Fort Worth, Baltimore/Washington - Dallas/Fort Worth or Washington, D.C. Reagan-National - Dallas/Fort Worth as they are the most popular.

What are the most popular airlines that fly from Washington, D.C. to Oklahoma?

When booking a flight from Washington, D.C. to Oklahoma, you may want to consider flying on American Airlines, Delta or United Airlines as they are the most popular for this route.

How far in advance should I book a flight from Washington, D.C. to Oklahoma?

Users have found that booking a flight from Washington, D.C. to Oklahoma at least 61 days early can save you up to 282% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from Washington, D.C. to Oklahoma for as little as $393 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $413 for flights departing within the next 3 days.

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

Our data shows that July tends to be the cheapest month to fly to Oklahoma from Washington, D.C.. Users have commonly found prices around $412 for the month, but tickets can be as low as $231. Due to multiple factors, prepare for potentially higher prices in December.

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

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

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

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 Oklahoma.

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

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

$52+ Flights from Washington, D.C. to Oklahoma

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Cheap flight deals from Washington, D.C. to Oklahoma

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$106 (Cheapflightsfares)
One-way from	$52 (FlightHub)
Popular in	December
Cheapest in	July
Average price	$475
Good round-trip deal	$376 or less
Good one-way deal	$163 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-Oklahoma City Will Rogers World flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Oklahoma City Will Rogers World flights.

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From Washington, D.C. (WAS) to Oklahoma

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

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Oklahoma.

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Price to beat on a one-way flight from Washington, D.C. (WAS) to Oklahoma.

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Find flight deals from Washington, D.C. to Oklahoma

Cheapest flights from Washington, D.C. to Oklahoma
Explore the most affordable flight options available from Washington, D.C. to Oklahoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Thu 4/2411:12 amBWI - DFW

Nonstop3h 27mSpirit Airlines

Thu 5/12:56 pmDFW - BWI

Nonstop2h 54mSpirit Airlines

Deal found 3/27

$106

Thu 4/1712:05 pmBWI - DFW

Nonstop3h 38mMultiple Airlines

Thu 4/242:56 pmDFW - BWI

Nonstop2h 54mMultiple Airlines

Deal found 3/27

$108

Fri 4/188:50 pmBWI - DFW

Nonstop3h 38mFrontier

Fri 4/256:00 amDFW - BWI

Nonstop3h 01mFrontier

Deal found 3/27

$120

Sat 5/36:15 amBWI - DFW

Nonstop3h 35mAmerican Airlines

Wed 5/77:17 pmDFW - BWI

Nonstop3h 04mAmerican Airlines

Deal found 3/27

$179

Sat 5/315:00 amDCA - DFW

Nonstop3h 25mAmerican Airlines

Tue 6/38:46 pmDFW - DCA

Nonstop3h 00mAmerican Airlines

Deal found 3/27

$183

Sat 5/246:17 amIAD - DFW

Nonstop3h 31mAmerican Airlines

Wed 5/287:05 pmDFW - IAD

Nonstop2h 52mAmerican Airlines

Deal found 3/27

$183

Sat 5/38:59 amDCA - DFW

1 stop4h 54mDelta

Wed 5/75:40 amDFW - DCA

1 stop6h 03mDelta

Deal found 3/27

$187

Sat 5/32:45 pmIAD - DFW

1 stop7h 23mDelta

Wed 5/75:40 amDFW - IAD

1 stop5h 04mDelta

Deal found 3/27

$187

Fri 4/186:00 pmDCA - DFW

1 stop7h 14mFrontier

Fri 4/252:30 pmDFW - DCA

1 stop6h 29mFrontier

Deal found 3/27

$195

Fri 4/259:12 pmBWI - OKC

1 stop13h 28mFrontier

Fri 5/29:44 amOKC - BWI

1 stop7h 52mFrontier

Deal found 3/27

$198

Tue 5/2712:47 pmIAD - DFW

Nonstop3h 28mFrontier

Sat 5/319:15 amDFW - IAD

Nonstop3h 02mFrontier

Deal found 3/27

$198

Sat 8/95:45 pmIAD - DFW

Nonstop3h 18mUnited Airlines

Mon 8/1110:35 amDFW - IAD

1 stop5h 55mUnited Airlines

Deal found 3/27

$229

Best flights from Washington, D.C. to Oklahoma
Discover carefully curated flight deals from Washington, D.C. to Oklahoma that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Thu 4/2411:12 amBWI - DFW

Nonstop3h 27mSpirit Airlines

Thu 4/242:56 pmDFW - BWI

Nonstop2h 54mSpirit Airlines

Deal found 3/26

$106

Mon 4/218:50 pmBWI - DFW

Nonstop3h 38mFrontier

Mon 5/52:59 pmDFW - BWI

Nonstop3h 09mFrontier

Deal found 3/28

$108

Fri 5/28:06 pmBWI - DFW

Nonstop3h 40mMultiple Airlines

Sun 5/42:56 pmDFW - BWI

Nonstop2h 54mMultiple Airlines

Deal found 3/26

$112

Sat 5/106:03 amBWI - DFW

Nonstop3h 31mAmerican Airlines

Sat 5/1010:23 amDFW - BWI

Nonstop3h 14mAmerican Airlines

Deal found 3/28

$174

Sat 5/36:25 amDCA - DFW

1 stop6h 33mDelta

Wed 5/75:59 pmDFW - DCA

1 stop4h 44mDelta

Deal found 3/27

$187

Sat 8/95:45 pmIAD - DFW

Nonstop3h 18mUnited Airlines

Mon 8/1110:35 amDFW - IAD

1 stop5h 55mUnited Airlines

Deal found 3/27

$229

Thu 4/1712:37 pmIAD - DFW

1 stop23h 15mSun Country Air

Sun 4/208:30 amDFW - IAD

1 stop25h 13mSun Country Air

Deal found 3/27

$325

Mon 6/23:35 pmDCA - OKC

2 stops8h 35mSouthwest

Wed 6/45:05 pmOKC - DCA

1 stop4h 20mSouthwest

Deal found 3/27

$339

Sat 5/315:00 amDCA - DFW

Nonstop3h 25mAmerican Airlines

Tue 6/38:46 pmDFW - DCA

Nonstop3h 00mAmerican Airlines

Deal found 3/27

$183

Mon 6/93:13 pmIAD - OKC

2 stops29h 14mAllegiant Air

Fri 6/133:42 pmOKC - IAD

1 stop28h 11mAllegiant Air

Deal found 3/27

$366

Sat 5/36:00 amIAD - DFW

1 stop5h 26mDelta

Wed 5/77:00 amDFW - IAD

1 stop6h 42mDelta

Deal found 3/28

$187

Fri 4/186:00 pmDCA - DFW

1 stop7h 14mFrontier

Fri 4/252:30 pmDFW - DCA

1 stop6h 29mFrontier

Deal found 3/27

$195

Last-minute flights from Washington, D.C. to Oklahoma
Discover last-minute flight deals from Washington, D.C. to Oklahoma. Data last updated March 28, 2025 and is based on user searches.

Tue 4/18:30 amIAD - DFW

1 stop13h 25mFrontier

Wed 4/96:25 amDFW - IAD

1 stop7h 04mFrontier

Deal found 3/27

$320

Wed 4/210:42 amBWI - DFW

Nonstop3h 34mMultiple Airlines

Wed 4/93:58 pmDFW - BWI

Nonstop3h 01mMultiple Airlines

Deal found 3/26

$133

Wed 4/210:42 amBWI - DFW

Nonstop3h 34mSpirit Airlines

Thu 4/102:56 pmDFW - BWI

Nonstop2h 54mSpirit Airlines

Deal found 3/26

$139

Wed 4/28:49 pmBWI - DFW

Nonstop3h 38mFrontier

Sat 4/123:23 pmDFW - BWI

Nonstop3h 01mFrontier

Deal found 3/27

$153

Wed 4/25:22 pmIAD - DFW

1 stop5h 33mDelta

Fri 4/1112:01 pmDFW - IAD

1 stop6h 40mDelta

Deal found 3/26

$272

Wed 4/26:09 amIAD - XNA

1 stop5h 57mDelta

Sat 4/54:59 pmXNA - IAD

1 stop4h 38mDelta

Deal found 3/27

$481

Thu 4/31:03 pmDCA - DFW

1 stop12h 11mFrontier

Fri 4/116:15 amDFW - DCA

1 stop9h 44mFrontier

Deal found 3/27

$238

Thu 4/311:05 amIAD - DFW

1 stop24h 05mMultiple Airlines

Thu 4/108:10 amDFW - IAD

3 stops26h 10mMultiple Airlines

Deal found 3/27

$462

Sat 4/56:15 amBWI - DFW

Nonstop3h 43mAmerican Airlines

Tue 4/152:25 pmDFW - BWI

Nonstop2h 50mAmerican Airlines

Deal found 3/27

$350

Sat 4/55:14 pmDCA - DFW

Nonstop3h 35mAmerican Airlines

Sat 4/196:56 amDFW - DCA

Nonstop2h 52mAmerican Airlines

Deal found 3/27

$459

Sun 4/69:56 pmBWI - OKC

1 stop13h 14mFrontier

Mon 4/1411:00 amOKC - BWI

1 stop9h 10mFrontier

Deal found 3/27

$238

Sun 4/66:18 amIAD - DFW

Nonstop3h 34mAmerican Airlines

Sun 5/115:00 amDFW - IAD

1 stop7h 22mAmerican Airlines

Deal found 3/27

$473

One-way flights from Washington, D.C. to Oklahoma
Search for one-way flight options from Washington, D.C. to Oklahoma. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Tue 5/66:00 pmBWI - DFW

Nonstop3h 31mSpirit Airlines

Deal found 3/26

$52

Mon 4/218:50 pmBWI - DFW

Nonstop3h 38mFrontier

Deal found 3/27

$59

Wed 4/307:08 pmBWI - DFW

Nonstop3h 42mAmerican Airlines

Deal found 3/27

$90

Tue 5/278:21 pmBWI - OKC

1 stop22h 45mMultiple Airlines

Deal found 3/27

$90

Sat 5/245:00 amDCA - DFW

Nonstop3h 25mAmerican Airlines

Deal found 3/28

$92

Sat 5/246:17 amIAD - DFW

Nonstop3h 31mAmerican Airlines

Deal found 3/28

$92

Tue 4/226:00 amDCA - DFW

1 stop5h 59mDelta

Deal found 3/28

$94

Sat 4/266:00 amIAD - DFW

1 stop5h 26mDelta

Deal found 3/27

$94

Thu 4/176:00 pmDCA - DFW

1 stop7h 14mFrontier

Deal found 3/27

$97

Thu 4/171:03 pmDCA - OKC

1 stop7h 28mFrontier

Deal found 3/27

$99

Sat 7/1211:04 amIAD - DFW

Nonstop3h 17mFrontier

Deal found 3/27

$100

Thu 5/19:16 pmBWI - OKC

1 stop12h 38mFrontier

Deal found 3/28

$105

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreDallas

BWI - DFW

BWIDFW

Baltimore/Washington

Thu 4/24

11:12 am-1:39 pm

Nonstop3h 27m

Dallas/Fort Worth

Thu 4/24

2:56 pm-6:50 pm

Nonstop2h 54m

$106

BaltimoreDallas

BWI - DFW

BWIDFW

Baltimore/Washington

Thu 4/17

12:05 pm-2:43 pm

Nonstop3h 38m

Dallas/Fort Worth

Thu 4/24

2:56 pm-6:50 pm

Nonstop2h 54m

$108

BaltimoreDallas

BWI - DFW

BWIDFW

Baltimore/Washington

Fri 4/18

8:50 pm-11:28 pm

Nonstop3h 38m

Dallas/Fort Worth

Fri 4/25

6:00 am-10:01 am

Nonstop3h 01m

$120

BaltimoreDallas

BWI - DFW

BWIDFW

Baltimore/Washington

Sat 5/3

6:15 am-8:50 am

Nonstop3h 35m

Dallas/Fort Worth

Wed 5/7

7:17 pm-11:21 pm

Nonstop3h 04m

$179

Washington, D.C.Dallas

DCA - DFW

DCADFW

Washington, D.C. Reagan-National

Sat 5/31

5:00 am-7:25 am

Nonstop3h 25m

Dallas/Fort Worth

Tue 6/3

8:46 pm-12:46 am

Nonstop3h 00m

$183

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Sat 5/24

6:17 am-8:48 am

Nonstop3h 31m

Dallas/Fort Worth

Wed 5/28

7:05 pm-10:57 pm

Nonstop2h 52m

$183

Washington, D.C.Dallas

DCA - DFW

DCADFW

Washington, D.C. Reagan-National

Sat 5/3

8:59 am-12:53 pm

1 stop4h 54m

Dallas/Fort Worth

Wed 5/7

5:40 am-12:43 pm

1 stop6h 03m

$187

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Sat 5/3

2:45 pm-9:08 pm

1 stop7h 23m

Dallas/Fort Worth

Wed 5/7

5:40 am-11:44 am

1 stop5h 04m

$187

Washington, D.C.Dallas

DCA - DFW

DCADFW

Washington, D.C. Reagan-National

Fri 4/18

6:00 pm-12:14 am

1 stop7h 14m

Dallas/Fort Worth

Fri 4/25

2:30 pm-9:59 pm

1 stop6h 29m

$195

BaltimoreOklahoma City

BWI - OKC

BWIOKC

Baltimore/Washington

Fri 4/25

9:12 pm-9:40 am

1 stop13h 28m

Oklahoma City Will Rogers World

Fri 5/2

9:44 am-6:36 pm

1 stop7h 52m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 results

...

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

Have a flexible travel schedule? Discover the best time to fly to Oklahoma 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 Oklahoma

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Oklahoma (average of $348). Flying from Washington, D.C. to Oklahoma in May is currently the most expensive (average of $422). 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 OK?

When flying from Washington, D.C. to Oklahoma, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Oklahoma by month

In terms of precipitation, rainfall in Oklahoma ranges from 1.2 - 5.1 inches per month. May is typically the wettest month, when rainfall can reach 5.1 in. January is typically the driest time to visit Oklahoma when rainfall is around 1.2 in.

Temperature in Oklahoma by month

If weather is an important factor for your trip to Oklahoma, 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 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

Reviews of airlines servicing Oklahoma

See what other customers who have flown with Southwest, Alaska Airlines and Delta from Washington, D.C. to Oklahoma have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines

8.0

Very good

9,798 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,896 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Allegiant Air

7.3

Good

731 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. to Oklahoma one-way?
For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $52. Users have also found prices from $59 and $90 on Frontier and American Airlines, respectively.
What are the most popular routes from Washington, D.C. to Oklahoma?
When deciding which route to take from Washington, D.C. to Oklahoma consider Washington, D.C. Dulles Intl - Dallas/Fort Worth, Baltimore/Washington - Dallas/Fort Worth or Washington, D.C. Reagan-National - Dallas/Fort Worth as they are the most popular.
Can I find deals for flights from Washington, D.C. to Oklahoma that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Oklahoma flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Oklahoma?
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 Oklahoma.
Can I find deals for business class flights from Washington, D.C. to Oklahoma?
Yes. Cheapflights offers flight deals from Washington, D.C. to Oklahoma 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 Oklahoma?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Oklahoma (average of $348). Flying from Washington, D.C. to Oklahoma in May is currently the most expensive (average of $422). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to Oklahoma

Dulles Intl to Miami flights

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Washington, D.C. to Oklahoma flights

Baltimore to Dallas/Fort Worth flights

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Baltimore to Tulsa flights

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Dulles Intl to Lawton flights

Top 5 airlines flying from Washington, D.C. to Oklahoma

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$112	Average$215	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$196	Average$447	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$228	Average$442	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$263	Average$520	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$312	Average$435	FlexibilityNo cancel fee	On-time63%

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$52+ Cheap flights from Washington, D.C. (WAS) to Oklahoma

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 5/6. 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 Oklahoma with Cheapflights

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Cheap flight deals from Washington, D.C. to Oklahoma

Keep the following information in mind while searching for Washington, D.C. to Oklahoma flight deals. Data was last updated March 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Washington, D.C. to Oklahoma

Cheapest flights from Washington, D.C. to OklahomaExplore the most affordable flight options available from Washington, D.C. to Oklahoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Explore the most affordable flight options available from Washington, D.C. to Oklahoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Washington, D.C. to Oklahoma. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Rainfall in Oklahoma by month

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

Temperature in Oklahoma by month

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

Reviews of airlines servicing Oklahoma

See what other customers who have flown with Southwest, Alaska Airlines and Delta from Washington, D.C. to Oklahoma have to say. Users can see the overall rating for each airline as well as how each is rated in terms of 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 Oklahoma. 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 Washington, D.C. to Oklahoma one-way?

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Cheapest flights from Washington, D.C. to Oklahoma
Explore the most affordable flight options available from Washington, D.C. to Oklahoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.