HRL - WAS

$113 Find Cheap Flights from Harlingen to Washington, D.C. - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Harlingen to Washington, D.C. departing on 8/18. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

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

Cheapest round-trip
$268
Typical prices: $245-$229
Southwest
Sat 8/29Sat 9/12
HRL - BWI • 1 stop
Cheapest one-way
$113
Southwest
Tue 8/18
HRL - BWI • 1 stop
Top airlines
Southwest
Cheapest • from $268 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Harlingen and Washington, D.C.. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Houston (IAH)
Cheapest • Avg $388 (round-trip)
Houston (HOU)
Shortest trip • 4h 59m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Harlingen to Washington, D.C. (HRL-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Washington, D.C. 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Sat, Aug 29 - Sat, Sep 12
Southwest Logo
11:30 am - 8:25 pm
HRL
-
BWI
7h 55m
1 stop
Southwest Logo
4:55 pm - 8:55 pm
BWI
-
HRL
5h 00m
1 stop
$268Southwest
Sat, Aug 29 - Sat, Sep 12
Southwest Logo
7:00 am - 1:35 pm
HRL
-
BWI
5h 35m
1 stop
Southwest Logo
2:20 pm - 8:55 pm
BWI
-
HRL
7h 35m
2 stops
$274Southwest
Sat, Aug 29 - Sat, Sep 12
Southwest Logo
6:05 am - 5:00 pm
HRL
-
BWI
9h 55m
2 stops
Southwest Logo
2:20 pm - 8:55 pm
BWI
-
HRL
7h 35m
2 stops
$279Southwest
Thu, Oct 22 - Thu, Nov 19
Delta Logo
2:00 pm - 11:29 pm
HRL
-
DCA
8h 29m
1 stop
Delta Logo
6:10 am - 1:31 pm
DCA
-
HRL
8h 21m
1 stop
$306Delta
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
7:20 am - 1:57 pm
HRL
-
DCA
5h 37m
1 stop
United Airlines Logo
2:55 pm - 9:54 pm
DCA
-
HRL
7h 59m
1 stop
$313United Airlines
Sat, Jul 4 - Tue, Jul 14
Southwest Logo
11:15 am - 5:55 pm
HRL
-
BWI
5h 40m
1 stop
Southwest Logo
6:20 am - 12:05 pm
BWI
-
HRL
6h 45m
1 stop
$319Southwest
Sat, Jul 4 - Sun, Jul 12
Southwest Logo
11:15 am - 5:55 pm
HRL
-
BWI
5h 40m
1 stop
Southwest Logo
7:00 am - 11:00 am
BWI
-
HRL
5h 00m
1 stop
$323Southwest
Tue, Sep 1 - Wed, Sep 2
United Airlines Logo
7:15 am - 4:04 pm
HRL
-
DCA
7h 49m
1 stop
United Airlines Logo
10:58 am - 3:59 pm
DCA
-
HRL
6h 01m
1 stop
$362United Airlines
Sat, Aug 29 - Sat, Sep 12
American Airlines Logo
10:34 am - 6:27 pm
HRL
-
IAD
6h 53m
1 stop
American Airlines Logo
7:57 am - 4:58 pm
IAD
-
HRL
10h 01m
2 stops
$451American Airlines
Sat, Aug 29 - Sat, Sep 12
American Airlines Logo
5:54 am - 5:04 pm
HRL
-
IAD
10h 10m
2 stops
American Airlines Logo
7:57 am - 4:58 pm
IAD
-
HRL
10h 01m
2 stops
$523American Airlines
Booking Insights

KAYAK's insights & trends for Harlingen to Washington, D.C. flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Harlingen to Washington, D.C. is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $412 and $393 respectively.

Find deals

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

Are your dates flexible? Find out the best times to travel from Harlingen to Washington, D.C. 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 Harlingen to Washington, D.C.

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

    In the last 5 days, the lowest price for a flight from Harlingen to Washington, D.C. was $113 for a one-way ticket and $268 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

    Star Alliance is the only airline alliance operating flights between Harlingen and Washington, D.C..

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

    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 Harlingen to Washington, D.C..

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Harlingen 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 Harlingen to Washington, D.C.?

    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 Washington, D.C. with an airline and back to Harlingen with another airline.

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

    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 Washington, D.C. from Harlingen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Harlingen to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to Washington, D.C.. 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 Harlingen to Washington, D.C.? 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.
7.9
SouthwestOverall score based on 4235 reviews
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
7.0Food
Airline reviews

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

10.0 ExcellentAnonymous, Jun 2026
OKC - LAS
Read more Southwest reviews

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

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

Information on your arrival and departure airports

Harlingen (HRL)