$170 Find Cheap Flights from Harlingen to District of Columbia

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 District of Columbia departing on 4/28. 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 District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to District of Columbia, 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 District of Columbia, as well as popular online travel agencies
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Flight Deals

Book Cheap Harlingen to District of Columbia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to District of Columbia 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 District of Columbia

Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
2:00 pm - 8:35 pm
HRL
-
DCA
5h 35m
1 stop
United Airlines Logo
11:05 am - 3:34 pm
DCA
-
HRL
5h 29m
1 stop
$297United Airlines
Fri, May 8 - Mon, May 11
United Airlines Logo
12:10 pm - 9:05 pm
HRL
-
DCA
7h 55m
1 stop
United Airlines Logo
12:40 pm - 8:00 pm
DCA
-
HRL
8h 20m
1 stop
$319United Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
5:18 pm - 11:58 pm
HRL
-
DCA
5h 40m
1 stop
United Airlines Logo
4:34 pm - 9:59 pm
DCA
-
HRL
6h 25m
1 stop
$351United Airlines
Tue, Apr 28 - Sat, May 2
United Airlines Logo
9:20 am - 4:22 pm
HRL
-
IAD
6h 02m
1 stop
United Airlines Logo
6:00 am - 11:23 am
IAD
-
HRL
6h 23m
1 stop
$351United Airlines
Fri, May 15 - Mon, May 18
Southwest Logo
5:00 pm - 11:25 pm
HRL
-
DCA
5h 25m
1 stop
Southwest Logo
6:35 pm - 11:00 pm
DCA
-
HRL
5h 25m
1 stop
$357Southwest
Tue, May 5 - Sat, May 9
American Airlines Logo
6:00 am - 6:58 pm
HRL
-
DCA
11h 58m
2 stops
American Airlines Logo
8:20 am - 7:33 pm
DCA
-
HRL
12h 13m
2 stops
$361American Airlines
Fri, May 8 - Mon, May 11
Southwest Logo
6:00 am - 3:00 pm
HRL
-
DCA
8h 00m
2 stops
Southwest Logo
6:35 pm - 11:00 pm
DCA
-
HRL
5h 25m
1 stop
$362Southwest
Fri, May 8 - Mon, May 11
American Airlines Logo
2:51 pm - 11:26 pm
HRL
-
IAD
7h 35m
1 stop
American Airlines Logo
5:59 pm - 10:51 pm
IAD
-
HRL
5h 52m
1 stop
$364American Airlines
Tue, May 5 - Sat, May 9
American Airlines Logo
6:00 am - 6:58 pm
HRL
-
DCA
11h 58m
2 stops
American Airlines Logo
11:58 am - 7:33 pm
DCA
-
HRL
8h 35m
1 stop
$365American Airlines
Tue, May 5 - Sat, May 9
United Airlines Logo
12:10 pm - 9:05 pm
HRL
-
DCA
7h 55m
1 stop
United Airlines Logo
8:30 am - 4:04 pm
DCA
-
HRL
8h 34m
1 stop
$369United Airlines
Booking Insights

KAYAK's insights & trends for Harlingen to District of Columbia flights

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

Which airlines provide the cheapest flights from Harlingen to District of Columbia?

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 Harlingen to District of Columbia were found on United Airlines ($351) and Southwest ($357).

Good to know

Cheapest flight$170
Flight from Harlingen to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Harlingen to District of Columbia?

    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 District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Harlingen to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Harlingen to District of Columbia 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 District of Columbia?

    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 from Harlingen to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Harlingen to District of Columbia?

    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 from Harlingen to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Harlingen to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to District of Columbia. 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 District of Columbia? 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 4320 reviews
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
8.6Crew
Airline reviews

We had a 5 hour delay on the tarmac in Baltimore

2.0 MediocreDavid, Mar 2026
ALB - BWI
Read more Southwest reviews

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

The flight crew where really good. Better then the crew from BNE to SFO

Everything you need to know for your flight from Harlingen to District of Columbia

Information on your arrival and departure airports