SFO - HRL

$119 Find Cheap Flights from San Francisco to Harlingen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Harlingen departing on 7/28. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Harlingen

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

Cheap Flights from San Francisco to Harlingen (SFO-HRL)

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

Mon, Jun 30 - Sat, Jul 26
American Airlines Logo
12:59 am - 9:35 amSFO-HRL
6h 36m1 stop
American Airlines Logo
8:10 pm - 12:08 amHRL-SFO
5h 58m1 stop
$328American Airlines
Find Deal
Tue, Jul 1 - Sat, Jul 26
American Airlines Logo
6:15 am - 7:22 pmSFO-HRL
11h 07m2 stops
American Airlines Logo
8:10 pm - 12:08 amHRL-SFO
5h 58m1 stop
$333American Airlines
Find Deal
Fri, Jul 11 - Sun, Jul 13
United Airlines Logo
5:00 am - 4:00 pmSFO-HRL
9h 00m1 stop
United Airlines Logo
5:10 am - 9:41 amHRL-SFO
6h 31m1 stop
$385United Airlines
Find Deal
Mon, Jun 30 - Sat, Jul 26
American Airlines Logo
12:59 am - 9:35 amSFO-HRL
6h 36m1 stop
American Airlines Logo
4:27 pm - 11:42 pmHRL-SFO
9h 15m2 stops
$444American Airlines
Find Deal
Tue, Jul 1 - Sat, Jul 26
American Airlines Logo
6:15 am - 7:22 pmSFO-HRL
11h 07m2 stops
American Airlines Logo
4:27 pm - 11:42 pmHRL-SFO
9h 15m2 stops
$449American Airlines
Find Deal
Fri, Jul 11 - Sun, Jul 13
United Airlines Logo
5:00 am - 4:00 pmSFO-HRL
9h 00m1 stop
United Airlines Logo
5:20 pm - 9:19 amHRL-SFO
17h 59m2 stops
$525United Airlines
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Thu, Jul 10 - Sun, Jul 13
United Airlines Logo
12:30 am - 4:00 pmSFO-HRL
13h 30m1 stop
United Airlines Logo
5:10 am - 9:41 amHRL-SFO
6h 31m1 stop
$619United Airlines
Find Deal
Tue, Jul 1 - Sat, Jul 5
United Airlines Logo
5:00 am - 4:00 pmSFO-HRL
9h 00m1 stop
United Airlines Logo
5:10 am - 9:41 amHRL-SFO
6h 31m1 stop
$659United Airlines
Find Deal
Wed, Jul 2 - Sun, Jul 6
United Airlines Logo
5:00 am - 4:00 pmSFO-HRL
9h 00m1 stop
United Airlines Logo
5:20 pm - 9:19 amHRL-SFO
17h 59m2 stops
$712United Airlines
Find Deal
Wed, Jul 2 - Sun, Jul 6
United Airlines Logo
5:00 am - 4:00 pmSFO-HRL
9h 00m1 stop
United Airlines Logo
5:10 am - 9:41 amHRL-SFO
6h 31m1 stop
$743United Airlines
Find Deal
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KAYAK's insights & trends for San Francisco to Harlingen flights

Get data-powered insights and trends into flights from San Francisco to Harlingen 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 San Francisco to Harlingen?

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

Your flight ticket price will generally be cheaper if you fly to Harlingen on a Friday and more expensive on a Wednesday. On your return trip to San Francisco, you should consider flying back on a Wednesday, and avoid Tuesdays for better deals.

What is the cheapest month to fly from San Francisco to Harlingen?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Harlingen, 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 San Francisco to Harlingen is October, where tickets cost $287 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $680 and $485 respectively.

Good to know

Low seasonJanuary
High seasonApril
Cheapest flight$119
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from San Francisco to Harlingen

When to book flights from San Francisco to Harlingen

Are your dates flexible? Find out the best times to travel from San Francisco to Harlingen 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 San Francisco to Harlingen

  • What is the cheapest flight from San Francisco to Harlingen?

    In the last 3 days, the lowest price for a flight from San Francisco to Harlingen was $119 for a one-way ticket and $328 for a round-trip.

  • Do I need a passport to fly between San Francisco and Harlingen?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from San Francisco to Harlingen?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Harlingen?

    oneworld, and Star Alliance are the airline alliances operating flights between San Francisco and Harlingen, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Francisco to Harlingen, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Harlingen are United Airlines and American Airlines. With an average price for the route of $424 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $399 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from San Francisco to Harlingen?

    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 San Francisco to Harlingen.

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

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

    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 Harlingen with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and HRL can sometimes prove cheaper using this method.

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

    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 Harlingen from San Francisco 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 San Francisco to Harlingen

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Harlingen. 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 San Francisco to Harlingen? 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.
7.4
United AirlinesOverall score based on 8809 reviews
7.7Boarding
6.6Food
7.0Entertainment
8.1Crew
7.3Comfort
Airline reviews

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

10.0 ExcellentElena, Jun 2025SFO - EWR
Read more United Airlines reviews

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

It’s a great flight. Service is good. Staff is awesome.

Boarding on time and fight was early but they didn't let us off the plane on time so we missed our connecting flight to Japan.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Eventless. It was a good flight and good crew. Can’t complaint.

Everything you need to know for your flight from San Francisco to Harlingen

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