$253 Find Cheap Flights from Harlingen to District of Columbia

This is the cheapest round-trip 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 9/3. 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

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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Best District of Columbia Flight Deals from Harlingen

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Cheap Flights from Harlingen to District of Columbia

 
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

Wed, Sep 3 - Fri, Sep 5
Southwest Logo
7:25 am - 5:00 pmHRL-DCA
8h 35m1 stop
Southwest Logo
6:55 am - 1:00 pmDCA-HRL
7h 05m1 stop
$253Southwest
Find Deal
Wed, Sep 3 - Fri, Sep 5
Southwest Logo
2:10 pm - 10:45 pmHRL-DCA
7h 35m1 stop
Southwest Logo
6:05 am - 1:00 pmDCA-HRL
7h 55m2 stops
$258Southwest
Find Deal
Wed, Sep 3 - Fri, Sep 5
Southwest Logo
2:10 pm - 11:15 pmHRL-DCA
8h 05m2 stops
Southwest Logo
6:00 am - 1:00 pmDCA-HRL
8h 00m2 stops
$263Southwest
Find Deal
Wed, Sep 3 - Fri, Sep 5
United Airlines Logo
2:05 pm - 8:52 pmHRL-IAD
5h 47m1 stop
United Airlines Logo
11:03 am - 4:02 pmIAD-HRL
5h 59m1 stop
$277United Airlines
Find Deal
Wed, Sep 3 - Fri, Sep 5
American Airlines Logo
2:51 pm - 10:49 pmHRL-IAD
6h 58m1 stop
American Airlines Logo
11:18 am - 6:00 pmIAD-HRL
7h 42m2 stops
$282American Airlines
Find Deal
Sat, Jun 28 - Tue, Jul 1
United Airlines Logo
1:59 pm - 10:29 pmHRL-IAD
7h 30m1 stop
United Airlines Logo
6:10 am - 1:20 pmIAD-HRL
8h 10m1 stop
$304United Airlines
Find Deal
Wed, Jul 9 - Wed, Jul 16
United Airlines Logo
5:10 am - 11:46 amHRL-DCA
5h 36m1 stop
United Airlines Logo
4:59 pm - 9:50 pmDCA-HRL
5h 51m1 stop
$317United Airlines
Find Deal
Wed, Sep 3 - Fri, Sep 5
American Airlines Logo
6:30 pm - 11:33 amHRL-IAD
16h 03m2 stops
American Airlines Logo
11:18 am - 10:57 pmIAD-HRL
12h 39m2 stops
$325American Airlines
Find Deal
Wed, Jul 9 - Wed, Jul 16
American Airlines Logo
10:07 am - 5:38 pmHRL-IAD
6h 31m1 stop
American Airlines Logo
6:44 pm - 12:06 amIAD-HRL
6h 22m1 stop
$358American Airlines
Find Deal
Mon, Jul 14 - Fri, Jul 18
Southwest Logo
2:15 pm - 11:15 pmHRL-DCA
8h 00m1 stop
Southwest Logo
7:25 pm - 11:50 pmDCA-HRL
5h 25m1 stop
$439Southwest
Find Deal
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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.

What’s the cheapest day of the week to fly from Harlingen to District of Columbia?

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

If your flying dates are flexible, you should consider flying to District of Columbia on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Harlingen to District of Columbia. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best deals.


Good to know

Low seasonFebruary
High seasonDecember
Cheapest flight$253
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Harlingen to Reagan Washington National 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.

  • What is the cheapest time of day to fly to District of Columbia?

    The cheapest time of day to fly to District of Columbia is generally in the morning, when round-trip flights cost $381 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally in the evening, which is peak travel time and where the average cost of a ticket is $407.

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 4287 reviews
7.6Entertainment
8.0Comfort
7.1Food
8.2Boarding
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

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

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Food choices were very limited. Taste of the dishes was average.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

Oh my gosh, I loved my experience with United! they made me want to travel more often.

How badly can you screw up baggage claim? We were told to go to baggage claim too for our bags from this flight. Another flights bags were there. They finished up. More bags from a different flight arrived. Our bags did not Finally the baggage claim belt stopped working and and are flight was still listed on the arrivals for that baggage claim 2. And then nothing It turns out that they had been delivered not only the United baggage claim but far away on a Delta baggage claim No I never told us. It was only the people looking around who had been on the flight But I’m sure there was plenty of time for the employees to raffle through the bags and steal whatever they wanted

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

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

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