SFO - HRL

$326 Find Cheap Flights from San Francisco to Harlingen

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Harlingen 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 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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Everything you should know

Cheapest round-trip
$326
Overall average: $421
American Airlines
Tue 3/10Wed 3/11
SFO - HRL • 1 stop
Cheapest one-way
Multiple Airlines
Thu 10/30
SFO - HRL • multi-stop
Top airlines
American Airlines
Cheapest • from $326 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 27% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Harlingen!
Flight Deals
Booking Insights
Flight 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

Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
8:13 am - 6:20 pmSFO-HRL
8h 07m1 stop
American Airlines Logo
7:55 pm - 12:24 amHRL-SFO
6h 29m1 stop
$326American Airlines
Find Deal
Mon, Mar 9 - Wed, Mar 11
United Airlines Logo
12:43 am - 10:59 amSFO-HRL
8h 16m1 stop
United Airlines Logo
9:20 am - 2:39 pmHRL-SFO
7h 19m1 stop
$327United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
11:34 am - 12:04 amSFO-HRL
10h 30m2 stops
American Airlines Logo
7:55 pm - 12:24 amHRL-SFO
6h 29m1 stop
$332American Airlines
Find Deal
Mon, Nov 17 - Tue, Nov 18
Southwest Logo
12:30 pm - 9:05 pmSFO-HRL
6h 35m1 stop
Southwest Logo
7:30 am - 1:25 pmHRL-SFO
7h 55m1 stop
$359Southwest
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
7:00 am - 9:44 pmSFO-HRL
12h 44m2 stops
United Airlines Logo
9:20 am - 2:39 pmHRL-SFO
7h 19m1 stop
$390United Airlines
Find Deal
Mon, Nov 17 - Tue, Nov 18
Southwest Logo
5:10 am - 5:05 pmSFO-HRL
9h 55m2 stops
Southwest Logo
7:30 am - 1:25 pmHRL-SFO
7h 55m1 stop
$394Southwest
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Thu, Nov 13 - Mon, Nov 17
American Airlines Logo
6:00 am - 3:31 pmSFO-HRL
7h 31m1 stop
American Airlines Logo
6:40 pm - 11:25 pmHRL-SFO
6h 45m1 stop
$419American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
10:10 am - 12:04 amSFO-HRL
11h 54m2 stops
American Airlines Logo
10:04 am - 8:58 pmHRL-SFO
12h 54m2 stops
$421American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
American Airlines Logo
11:15 am - 10:57 pmSFO-HRL
9h 42m2 stops
American Airlines Logo
6:40 pm - 11:25 pmHRL-SFO
6h 45m1 stop
$424American Airlines
Find Deal
Tue, Nov 25 - Sun, Nov 30
Sun Country Air Logo
6:12 pm - 11:26 amSFO-HRL
15h 14m1 stop
Sun Country Air Logo
3:04 pm - 10:06 amHRL-SFO
21h 02m1 stop
$995Sun Country Air
Find Deal
Booking Insights

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 January, where tickets cost $320 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $680 and $599 respectively.

Good to know

Low seasonAugust
Cheapest flight$326
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly and prices are also 14% 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 $326 for a round-trip ticket.

  • 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?

    Star Alliance, and oneworld are the airline alliances operating flights between San Francisco and Harlingen, with Star Alliance 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 $570 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 $436 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 8999 reviews
7.7Boarding
7.3Comfort
8.1Crew
6.6Food
7.1Entertainment
Airline reviews

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

4.0 OkayAnonymous, Oct 2025SFO - PTY
Read more United Airlines reviews

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Delayed delayed delayed and no offer for food or vouchers

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

Flight attendants on this flight were very attentive and friendly

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

Very below average , plane from Dallas to Toyko was very poor designed plane. I had to sit for 13 hours next to fat man. Really bad seat and entertainment screen sucked

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

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

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