$225 Find Cheap Flights from Harlingen to District of Columbia - 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 District of Columbia 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

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
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

Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
5:18 pm - 11:59 pm-
5h 41m
United Airlines Logo
2:40 pm - 9:52 pm-
8h 12m
$339United Airlines
Tue, Oct 27 - Fri, Oct 30
Southwest Logo
12:05 pm - 8:20 pm-
7h 15m
Southwest Logo
6:05 am - 12:15 pm-
7h 10m
$339Southwest
Thu, Oct 22 - Tue, Oct 27
Delta Logo
2:13 pm - 11:44 pm-
8h 31m
Delta Logo
6:05 am - 1:23 pm-
8h 18m
$339Delta
Thu, Oct 22 - Mon, Oct 26
Delta Logo
2:13 pm - 11:44 pm-
8h 31m
Delta Logo
6:05 am - 1:23 pm-
8h 18m
$339Delta
Fri, Nov 13 - Sun, Nov 15
Delta Logo
2:30 pm - 11:39 pm-
8h 09m
Delta Logo
6:05 am - 1:32 pm-
8h 27m
$339Delta
Tue, Oct 27 - Fri, Oct 30
Southwest Logo
7:10 am - 4:05 pm-
7h 55m
Southwest Logo
6:55 pm - 11:35 pm-
5h 40m
$344Southwest
Tue, Oct 27 - Fri, Oct 30
Southwest Logo
1:00 pm - 9:55 pm-
7h 55m
Southwest Logo
6:05 am - 12:15 pm-
7h 10m
$349Southwest
Tue, Oct 27 - Fri, Oct 30
United Airlines Logo
1:59 pm - 8:49 pm-
5h 50m
United Airlines Logo
2:38 pm - 7:47 pm-
6h 09m
$359United Airlines
Thu, Sep 3 - Mon, Sep 7
United Airlines Logo
5:18 pm - 12:30 am-
6h 12m
United Airlines Logo
6:30 am - 1:24 pm-
7h 54m
$374United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
9:20 am - 6:25 pm-
8h 05m
United Airlines Logo
12:40 pm - 7:32 pm-
7h 52m
$429United 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.

What is the cheapest month to fly from Harlingen to District of Columbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to District of Columbia, 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 District of Columbia is February, when tickets cost $0 (return) on average. On the other hand, the most expensive months are May and October, when the average cost of round-trip tickets is $797 and $593 respectively.

Good to know

Cheapest flight

$225
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.

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 4222 reviews
7.5Entertainment
8.6Crew
8.0Comfort
7.0Food
8.1Boarding
Airline reviews

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

8.0 ExcellentSean, Jul 2026
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.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

Sucks ! All three flights I was on this trip were delayed.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

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

Information on your arrival and departure airports