$299 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 3/10. 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, Mar 10 - Wed, Mar 11
Delta Logo
3:00 pm - 11:33 pmHRL-DCA
7h 33m1 stop
Delta Logo
7:40 am - 2:29 pmDCA-HRL
7h 49m1 stop
$299Delta
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Tue, Mar 10 - Wed, Mar 11
Delta Logo
3:00 pm - 11:33 pmHRL-DCA
7h 33m1 stop
Delta Logo
6:10 am - 2:29 pmDCA-HRL
9h 19m1 stop
$329Delta
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Fri, Nov 14 - Thu, Nov 20
Delta Logo
3:39 pm - 11:31 pmHRL-DCA
6h 52m1 stop
Delta Logo
6:10 am - 2:43 pmDCA-HRL
9h 33m1 stop
$339Delta
Find Deal
Fri, Nov 14 - Sun, Nov 16
Delta Logo
3:39 pm - 11:52 pmHRL-IAD
7h 13m1 stop
Delta Logo
6:03 am - 2:43 pmIAD-HRL
9h 40m1 stop
$339Delta
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Sat, Nov 15 - Wed, Nov 19
American Airlines Logo
10:21 am - 7:00 pmHRL-DCA
7h 39m2 stops
American Airlines Logo
10:15 am - 6:10 pmDCA-HRL
8h 55m2 stops
$349American Airlines
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Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
10:04 am - 4:09 pmHRL-IAD
5h 05m1 stop
American Airlines Logo
6:40 am - 11:35 amIAD-HRL
5h 55m1 stop
$397American Airlines
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Wed, Nov 12 - Fri, Nov 21
United Airlines Logo
5:00 am - 11:29 amHRL-DCA
5h 29m1 stop
United Airlines Logo
6:00 am - 10:59 amDCA-HRL
5h 59m1 stop
$484United Airlines
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Wed, Nov 12 - Fri, Nov 21
United Airlines Logo
5:00 am - 11:28 amHRL-IAD
5h 28m1 stop
United Airlines Logo
6:00 am - 10:59 amIAD-HRL
5h 59m1 stop
$484United Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 30
Southwest Logo
5:45 am - 2:15 pmHRL-DCA
7h 30m2 stops
Southwest Logo
7:20 pm - 11:55 pmDCA-HRL
5h 35m1 stop
$657Southwest
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Fri, Nov 21 - Sun, Nov 30
Southwest Logo
5:45 am - 2:15 pmHRL-DCA
7h 30m2 stops
Southwest Logo
4:15 pm - 11:55 pmDCA-HRL
8h 40m2 stops
$798Southwest
Find Deal
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.

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 Friday, 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 Thursday and avoiding Saturdays for the best deals.

Good to know

Cheapest flight$299
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.

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 4241 reviews
7.5Entertainment
7.0Food
8.6Crew
8.0Comfort
8.1Boarding
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

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.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Overall it was good. I missed my connection but I was put on another flight.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

Gate agent did not hold flight for connection, provided no assistance to get new flight

United airlines, mediocre at best. No issues , nothing great . Worked for me

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

Information on your arrival and departure airports

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