WAS - HRL

$209 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 3/19. 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 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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Everything you should know

Cheapest round-trip
$327
United Airlines
Wed 2/11Sat 2/14
BWI - HRL • 1 stop
Cheapest one-way
$209
United Airlines
Thu 3/19
BWI - HRL • 1 stop
Top airlines
United Airlines
Cheapest • from $327 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Harlingen!
Flight Deals
Booking Insights
Flight Deals

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

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Wed, Feb 11 - Sat, Feb 14
United Airlines Logo
3:52 pm - 9:59 pm
BWI
-
HRL
7h 07m
1 stop
United Airlines Logo
7:00 am - 4:10 pm
HRL
-
BWI
8h 10m
1 stop
$327United Airlines
Wed, Feb 11 - Sat, Feb 14
United Airlines Logo
3:52 pm - 9:59 pm
BWI
-
HRL
7h 07m
1 stop
United Airlines Logo
7:00 am - 9:17 pm
HRL
-
BWI
13h 17m
2 stops
$332United Airlines
Wed, Feb 11 - Sat, Feb 14
United Airlines Logo
10:05 am - 9:59 pm
BWI
-
HRL
12h 54m
2 stops
United Airlines Logo
9:20 am - 9:17 pm
HRL
-
BWI
10h 57m
2 stops
$337United Airlines
Fri, Feb 13 - Sat, Feb 21
Southwest Logo
4:55 pm - 11:30 pm
BWI
-
HRL
7h 35m
2 stops
Southwest Logo
5:25 pm - 11:40 pm
HRL
-
BWI
5h 15m
1 stop
$369Southwest
Wed, Feb 11 - Sat, Feb 14
American Airlines Logo
6:59 am - 2:46 pm
DCA
-
HRL
8h 47m
2 stops
American Airlines Logo
2:45 pm - 11:00 pm
HRL
-
DCA
7h 15m
1 stop
$379American Airlines
Fri, Feb 13 - Sat, Feb 21
Southwest Logo
4:55 pm - 11:30 pm
BWI
-
HRL
7h 35m
2 stops
Southwest Logo
6:15 am - 3:40 pm
HRL
-
BWI
8h 25m
2 stops
$383Southwest
Sun, Feb 15 - Thu, Feb 19
Southwest Logo
2:15 pm - 9:35 pm
BWI
-
HRL
8h 20m
1 stop
Southwest Logo
5:40 am - 3:10 pm
HRL
-
BWI
8h 30m
2 stops
$404Southwest
Fri, Feb 13 - Sat, Feb 21
Southwest Logo
6:15 am - 5:25 pm
BWI
-
HRL
12h 10m
1 stop
Southwest Logo
5:25 pm - 11:40 pm
HRL
-
BWI
5h 15m
1 stop
$409Southwest
Wed, Feb 11 - Sat, Feb 14
American Airlines Logo
6:59 am - 2:46 pm
DCA
-
HRL
8h 47m
2 stops
American Airlines Logo
6:00 am - 2:41 pm
HRL
-
DCA
7h 41m
2 stops
$444American Airlines
Fri, Feb 13 - Sat, Feb 21
American Airlines Logo
9:18 am - 7:36 pm
IAD
-
HRL
11h 18m
2 stops
American Airlines Logo
2:45 pm - 10:53 pm
HRL
-
IAD
7h 08m
1 stop
$707American Airlines
Booking Insights

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.

Which airlines provide the cheapest flights from Washington, D.C. to Harlingen?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Harlingen were found on United Airlines ($327) and Southwest ($369).

Find deals

Good to know

Cheapest flight$209
Flight from Baltimore 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 $209 for a one-way ticket and $327 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.

  • 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.

Reviews of the top airline 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 4267 reviews
8.1Boarding
8.6Crew
8.0Comfort
7.0Food
7.5Entertainment
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Was good. I miss the free 2 checked bags. That was part of what made Southwest special

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

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

Information on your arrival and departure airports

Harlingen (HRL)