HRL - WAS

$225 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 9/14. 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

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Everything you should know

Cheapest round-trip
$294
Southwest
Tue 8/18Sat 12/12
HRL - BWI • 2 stops
Cheapest one-way
$225
United Airlines
Mon 9/14
HRL - IAD • 1 stop
Top airlines
Southwest
Cheapest • from $294 (round-trip)
Southwest
Best reviews • 8.0 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.
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Top layover airports
Houston (IAH)
Cheapest • Avg $389 (round-trip)
Houston (HOU)
Shortest trip • 4h 59m (one-way)
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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.

Tue, Aug 18 - Sat, Dec 12
Southwest Logo
6:35 am - 3:30 pm
HRL
-
BWI
7h 55m
2 stops
Southwest Logo
9:30 am - 2:20 pm
BWI
-
HRL
5h 50m
1 stop
$294Southwest
Thu, Sep 17 - Sat, Sep 19
Southwest Logo
10:55 am - 10:45 pm
HRL
-
BWI
10h 50m
1 stop
Southwest Logo
4:55 pm - 9:00 pm
BWI
-
HRL
5h 05m
1 stop
$294Southwest
Thu, Sep 17 - Sat, Sep 19
Southwest Logo
10:55 am - 10:45 pm
HRL
-
BWI
10h 50m
1 stop
Southwest Logo
2:20 pm - 9:00 pm
BWI
-
HRL
7h 40m
2 stops
$300Southwest
Sat, Aug 22 - Thu, Aug 27
Southwest Logo
11:30 am - 8:25 pm
HRL
-
BWI
7h 55m
1 stop
Southwest Logo
8:45 am - 1:20 pm
BWI
-
HRL
5h 35m
1 stop
$307Southwest
Fri, Nov 13 - Sun, Nov 15
Delta Logo
2:30 pm - 11:20 pm
HRL
-
IAD
7h 50m
1 stop
Delta Logo
7:30 am - 1:32 pm
IAD
-
HRL
7h 02m
1 stop
$339Delta
Fri, Nov 13 - Sun, Nov 15
Delta Logo
2:30 pm - 11:39 pm
HRL
-
DCA
8h 09m
1 stop
Delta Logo
6:05 am - 1:32 pm
DCA
-
HRL
8h 27m
1 stop
$339Delta
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
DCA
5h 41m
1 stop
United Airlines Logo
2:40 pm - 9:52 pm
DCA
-
HRL
8h 12m
1 stop
$339United Airlines
Sat, Aug 22 - Thu, Aug 27
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
DCA
5h 41m
1 stop
United Airlines Logo
4:38 pm - 9:52 pm
DCA
-
HRL
6h 14m
1 stop
$339United Airlines
Thu, Sep 17 - Sat, Sep 19
United Airlines Logo
5:18 pm - 11:59 pm
HRL
-
DCA
5h 41m
1 stop
United Airlines Logo
4:43 pm - 9:52 pm
DCA
-
HRL
6h 09m
1 stop
$339United Airlines
Mon, Nov 2 - Sat, Nov 7
Delta Logo
2:13 pm - 11:16 pm
HRL
-
IAD
8h 03m
2 stops
Delta Logo
7:23 am - 1:23 pm
IAD
-
HRL
7h 00m
1 stop
$344Delta
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 May and October, where the average cost of round-trip tickets is $797 and $593 respectively.

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Good to know

Cheapest flight

$225
Flight from Harlingen to Reagan Washington National Airport

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 $225 for a one-way ticket and $294 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.
8.0
SouthwestOverall score based on 4229 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
Airline reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

8.0 ExcellentSean, Jul 2026
HOU - LGB
Read more Southwest reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

Flight was delayed by 2 hours, meaning that a flight to Dwnver which should have arrived at 11pm came into the airport at 1 am. Made for a very long day.

Great job! My family doesnt fly often but we felt safe 100%

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

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

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The flight was delayed about 20 minutes, but this was an evening flight, so it comes as no surprise. This flight came a good 1.5 days ahead of hurricane Helene which was still far out in the gulf. However, the flight never removed the seated buckle light. The staff announced from the beginning that due to the bad weather (I suppose the hurricane a day and a half away) they would have to do an abbreviated service with water and a snack. I am fine with their water and snack offering, but this was one of the smoothest flights I've had in years. If Southwest believes a flight like this requires everyone to remain seated, then all of their flights should remain buckled for the entire flight. I cannot help but wonder if things like this are a sneaky way to cut back on expenses since the airline is currently under a lot of pressure to reduce costs.

Although the flight was delayed, but the crew was amazing. They did the best they could to make the time enjoyable.

My experience was find with Southwest. The only issue I have is...at the exact time for me to check in...I don't understand how I always end up in C.

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

Information on your arrival and departure airports

Harlingen (HRL)