WAS - HRL

$119 Find Cheap Flights from Washington, D.C. to Harlingen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Harlingen departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Harlingen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Harlingen, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Harlingen, as well as popular online travel agencies
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Cheap Flights from Washington, D.C. to Harlingen

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Harlingen that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Washington, D.C. to Harlingen

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Harlingen.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
2:47 pm - 7:44 pmDCA-HRL
5h 57m1 stop
United Airlines Logo
5:30 pm - 11:59 pmHRL-DCA
5h 29m1 stop
$253United Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
6:00 am - 11:24 amIAD-HRL
6h 24m1 stop
United Airlines Logo
2:14 pm - 10:13 pmHRL-IAD
6h 59m1 stop
$270United Airlines
Find Deal
Thu, May 15 - Mon, May 19
American Airlines Logo
6:17 am - 11:28 amIAD-HRL
6h 11m1 stop
American Airlines Logo
12:05 pm - 12:02 amHRL-IAD
10h 57m2 stops
$303American Airlines
Find Deal
Thu, May 15 - Mon, May 19
United Airlines Logo
8:25 am - 1:24 pmIAD-HRL
5h 59m1 stop
United Airlines Logo
7:15 am - 2:20 pmHRL-IAD
6h 05m1 stop
$338United Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
6:10 am - 1:20 pmIAD-HRL
8h 10m1 stop
United Airlines Logo
5:10 am - 11:32 amHRL-IAD
5h 22m1 stop
$381United Airlines
Find Deal
Fri, Jul 25 - Sun, Aug 3
American Airlines Logo
9:11 am - 3:57 pmIAD-HRL
7h 46m2 stops
American Airlines Logo
12:05 pm - 12:02 amHRL-IAD
10h 57m2 stops
$399American Airlines
Find Deal
Thu, May 15 - Mon, May 19
United Airlines Logo
6:00 am - 11:24 amBWI-HRL
6h 24m1 stop
United Airlines Logo
2:14 pm - 10:53 pmHRL-BWI
7h 39m1 stop
$473United Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
6:45 am - 4:04 pmBWI-HRL
10h 19m2 stops
United Airlines Logo
2:14 pm - 10:53 pmHRL-BWI
7h 39m1 stop
$478United Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
8:35 am - 7:35 pmIAD-HRL
12h 00m2 stops
United Airlines Logo
5:10 am - 11:32 amHRL-IAD
5h 22m1 stop
$492United Airlines
Find Deal
Fri, Jul 25 - Sun, Aug 3
American Airlines Logo
5:00 am - 11:28 amDCA-HRL
7h 28m2 stops
American Airlines Logo
10:15 am - 7:42 pmHRL-DCA
8h 27m1 stop
$494American Airlines
Find Deal
Wed, May 14 - Sun, May 18
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KAYAK's insights & trends for Washington, D.C. to Harlingen flights

Get data-powered insights and trends into flights from Washington, D.C. to Harlingen to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington, D.C. to Harlingen?

The average price of all round-trip flights from Washington, D.C. to Harlingen clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington, D.C. to Harlingen, look for departures on Thursdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Harlingen, Friday is the cheapest day to fly and Wednesday is the most expensive.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$119
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly with an average 52% increase in price.
Flight from Reagan Washington National Airport to Harlingen

When to book flights from Washington, D.C. to Harlingen

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Harlingen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Harlingen

  • What is the cheapest flight from Washington, D.C. to Harlingen?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Harlingen was $119 for a one-way ticket and $253 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Harlingen?

    A passport is not required to fly from Washington, D.C. to Harlingen.

  • Which airports will I be using when flying from Washington, D.C. to Harlingen?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Harlingen. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Harlingen Valley Intl.

  • Which aircraft models fly most regularly from Washington, D.C. to Harlingen?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Harlingen?

    oneworld, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Harlingen, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Harlingen, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Harlingen are Southwest and American Airlines. With an average price for the route of $428 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $524 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Harlingen?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Harlingen.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Harlingen?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Harlingen from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Harlingen?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Harlingen with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Harlingen?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Harlingen from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Washington, D.C. to Harlingen

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Harlingen. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Harlingen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
8.0Comfort
8.2Boarding
7.6Entertainment
7.1Food
8.6Crew
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

The movies using Southwest WiFi kept pausing and I had to restart multiple times.

First, my flight was a usual flight nothing exceptional or unexpected. Over all it was a normal, good flight! Second, your questionaire is wholly lacking in the proper options to which one can answer a question. Often on short flights, there is no food let alone entertainment so why isn't that reflected in your questionaire? A simple "not applicable" would cover that issue appropriately but no, your form arbitrarily enters an answer based on the initial assessment which normally isn't factual. Until you provide an accurate means of assessing flights, I'll no longer be completing of these unimpressive and misleading assessements. Thank you!

Easy to book and to get check in and get on and off.

First time I’ve ever missed a flight and it was an international flight.. Southwest put me on the next flight and it was the best experience possible.

It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Southwest is amazing. The only issues I would have to say is. I don't like the unassigned seating, and the fact that the flight is completely sold out. It makes for a very tight fit. Other than that. Crew was great fun professional and attentive.

Everything worked well. Crew was as entertaining as is possible on a plane flight. Southwest still has good legroom:

Several delays. Next flight was worse. Did not arrive home until 2am PT

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Any sort of gluten free snack option would be nice

I had a carry on and a personal bag. I put my personal item under my seat and on way to the seat I put my bag up. I usually close my eyes and rest as I was on call for last 36 hours. I heard very loud announcements that someone needs to identify their bag. Pretty sure it was not mine until the hostess pointed out my jacket details attached to the bag. I asked why she got my bag out. I got berated and did not want to create a scene. But this person needs to be talked to.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Between Las Vegas and Dallas was okay But, once in the Dallas airport, notice, I have disability and ask for a wheelchair, they leave in a middle of nowhere, the personal in charge try to push me on a cart where I couldn't sit because was to high. Then they don't care about me, they bulling, till I start to yelling and crying, ask to everyone around, who can help me. The man in charge make a despective movements and said you are to loosing the fly. The last name in his batch started with an H, I did not have the full name. A nightmare. After all, a woman in charge was walking very slowly and asking me for a tip cause she was helping me to reach the fly. For years, AA has been the preferred airline. The personal in charge of the disabled people are discriminate me. Thank you Kayak.

Flight was late and missed connecting flight. They could have better accommodated, but instead did an overnight and had to arrive the next afternoon.

Everything you need to know for your flight from Washington, D.C. to Harlingen

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