HRL - SFO

$174 Find Cheap Flights from Harlingen to San Francisco - 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 San Francisco 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, 0 bags

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Everything you should know

Cheapest round-trip
$247
United Airlines
Sat 9/5Sat 9/12
HRL - SFO • 1 stop
Cheapest one-way
$174
United Airlines
Thu 9/3
HRL - SFO • 1 stop
Top airlines
Cheapest • from $247 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Harlingen and San Francisco. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $370 (round-trip)
Shortest trip • 7h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

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

Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
5:18 pm - 9:45 pmHRL  Harlingen Valley Intl-SFO San Francisco
6h 27m1 stop Houston George Bush Intcntl
United Airlines Logo
7:05 am - 3:59 pmSFO  San Francisco-HRL Harlingen Valley Intl
6h 54m1 stop Houston George Bush Intcntl
$247United Airlines
Mon, Jan 11 - Tue, Jan 12
United Airlines Logo
5:16 pm - 12:04 amHRL  Harlingen Valley Intl-SFO San Francisco
8h 48m1 stop Houston George Bush Intcntl
United Airlines Logo
7:00 am - 3:34 pmSFO  San Francisco-HRL Harlingen Valley Intl
6h 34m1 stop Houston George Bush Intcntl
$247United Airlines
Thu, Oct 29 - Sun, Nov 1
American Airlines Logo
6:42 pm - 11:28 pmHRL  Harlingen Valley Intl-SFO San Francisco
6h 46m1 stop Dallas/Fort Worth
American Airlines Logo
11:23 pm - 10:13 amSFO  San Francisco-HRL Harlingen Valley Intl
8h 50m1 stop Dallas/Fort Worth
$252American Airlines
Mon, Jan 11 - Wed, Jan 13
Southwest Logo
7:40 am - 11:50 amHRL  Harlingen Valley Intl-SFO San Francisco
6h 10m1 stop Austin Bergstrom
Southwest Logo
11:35 am - 9:50 pmSFO  San Francisco-HRL Harlingen Valley Intl
8h 15m2 stops Denver Intl Houston Hobby
$252Southwest
Mon, Jan 11 - Tue, Jan 12
Southwest Logo
7:40 am - 11:50 amHRL  Harlingen Valley Intl-SFO San Francisco
6h 10m1 stop Austin Bergstrom
Southwest Logo
6:45 am - 4:00 pmSFO  San Francisco-HRL Harlingen Valley Intl
7h 15m2 stops Phoenix Sky Harbor Intl Houston Hobby
$252Southwest
Mon, Jan 11 - Wed, Jan 13
Southwest Logo
7:40 am - 11:50 amHRL  Harlingen Valley Intl-SFO San Francisco
6h 10m1 stop Austin Bergstrom
Southwest Logo
7:50 am - 8:35 pmSFO  San Francisco-HRL Harlingen Valley Intl
10h 45m1 stop Austin Bergstrom
$252Southwest
Mon, Jan 11 - Wed, Jan 13
Southwest Logo
6:50 am - 12:50 pmHRL  Harlingen Valley Intl-SFO San Francisco
8h 00m2 stops Houston Hobby San Diego
Southwest Logo
9:30 am - 8:35 pmSFO  San Francisco-HRL Harlingen Valley Intl
9h 05m2 stops San Diego Austin Bergstrom
$257Southwest
Mon, Jan 11 - Tue, Jan 12
Southwest Logo
6:50 am - 12:50 pmHRL  Harlingen Valley Intl-SFO San Francisco
8h 00m2 stops Houston Hobby San Diego
Southwest Logo
6:45 am - 4:00 pmSFO  San Francisco-HRL Harlingen Valley Intl
7h 15m2 stops Phoenix Sky Harbor Intl Houston Hobby
$257Southwest
Thu, Oct 29 - Sun, Nov 1
American Airlines Logo
6:42 pm - 12:44 amHRL  Harlingen Valley Intl-SFO San Francisco
8h 02m1 stop Dallas/Fort Worth
American Airlines Logo
5:30 am - 2:17 pmSFO  San Francisco-HRL Harlingen Valley Intl
6h 47m1 stop Dallas/Fort Worth
$273American Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
5:18 pm - 12:27 amHRL  Harlingen Valley Intl-SFO San Francisco
9h 09m1 stop Houston George Bush Intcntl
United Airlines Logo
7:05 am - 3:59 pmSFO  San Francisco-HRL Harlingen Valley Intl
6h 54m1 stop Houston George Bush Intcntl
$287United Airlines
Booking Insights

KAYAK's insights & trends for Harlingen to San Francisco flights

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to San Francisco, 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 San Francisco is May, where tickets cost $0 (return) on average. On the other hand, the most expensive months are October and November, where the average cost of round-trip tickets is $690 and $644 respectively.

Good to know

Low season

September

Cheapest flight

$174
Best time to beat the crowds with an average 67% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Harlingen to San Francisco

When to book flights from Harlingen to San Francisco

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

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

    In the last 5 days, the lowest price for a flight from Harlingen to San Francisco was $174 for a one-way ticket and $247 for a round-trip.

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

    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 Harlingen to San Francisco?

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

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

    oneworld is the only airline alliance operating flights between Harlingen and San Francisco.

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

    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 San Francisco.

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

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

    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 San Francisco with an airline and back to Harlingen with another airline. Booking your flights between Harlingen and SFO 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 Harlingen to San Francisco?

    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 San Francisco from Harlingen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Harlingen to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to San Francisco. 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 San Francisco? 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.
7.1
American AirlinesOverall score based on 11867 reviews
7.9Crew
6.8Entertainment
7.5Boarding
7.2Comfort
6.4Food
Airline reviews

Horrible. No AC. No Air inside the plane. We had to deplane twice! It is late almost 5 hrs in total. I almost passed out and about to call 911. I asked the crew to be honest and open the door. The lady next to me was lay down in the floor due to heat and no air inside the plane. I got headaches, can’t wait the replacement flight about midnight Dallas time. I end it up rebook for next day flight and stay overnight using my own pocket in a hotel nearby due to headaches and can’t breath. I still have a headache this morning. Still not decided yes how to file this issue to AA and/or FAA.

2.0 MediocreKandar, Jul 2026
Read more American Airlines reviews

Horrible. No AC. No Air inside the plane. We had to deplane twice! It is late almost 5 hrs in total. I almost passed out and about to call 911. I asked the crew to be honest and open the door. The lady next to me was lay down in the floor due to heat and no air inside the plane. I got headaches, can’t wait the replacement flight about midnight Dallas time. I end it up rebook for next day flight and stay overnight using my own pocket in a hotel nearby due to headaches and can’t breath. I still have a headache this morning. Still not decided yes how to file this issue to AA and/or FAA.

Initial flight had an engine overheat - returned to DFW. Had another plane ready, but crew timed out. Had to wait 5h for boarding. Fully boarded and pilot says plane is not flight worthy. Deplane and go to the other end of the terminal. Wait an hour to board third plane because the crew couldn’t leave the second plane because no wheelchairs were brought to remove passengers. Finally take off and there is no catering (in flight service) even in first class. Very much an AA failure.

The flight attendant was very polite and attentive. The food was good.

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

A first class seat should fit a fat person, and this doesn't. The trays in the armrest are less functional than an ordinary tray in the back of the seat.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

Missed my second flight because the first one was 1.5 hours delayed. Two hours on the plane and we all had to change the plane. Absolutely horrible experience. Never flying American Airlines again

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

Information on your arrival and departure airports