$92 Find Cheap Flights from San Antonio to New Hampshire

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 Antonio to New Hampshire departing on 11/12. 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 New Hampshire

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

Cheap Flights from San Antonio to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Boston2 stops$259
Portland
Portland1 stop$317
Boston
Boston2 stops$259
Portland
Portland1 stop$317

Book Cheap San Antonio to New Hampshire Plane Tickets

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

Fri, Nov 7 - Tue, Nov 18
Spirit Airlines Logo
4:16 pm - 2:56 pmSAT-BOS
21h 40m2 stops
Spirit Airlines Logo
5:45 am - 3:11 pmBOS-SAT
10h 26m1 stop
$259Spirit Airlines
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Mon, Nov 10 - Sat, Nov 15
Multiple Airlines Logo
5:35 pm - 12:40 amSAT-BOS
30h 05m2 stops
Multiple Airlines Logo
5:45 am - 3:11 pmBOS-SAT
10h 26m1 stop
$260Multiple Airlines
Find Deal
Tue, Nov 4 - Wed, Nov 19
Delta Logo
1:50 pm - 6:59 pmSAT-BOS
4h 09mnonstop
Delta Logo
9:15 am - 1:05 pmBOS-SAT
4h 50mnonstop
$299Delta
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Tue, Oct 21 - Thu, Oct 23
Southwest Logo
5:45 am - 2:40 pmSAT-BOS
7h 55m1 stop
Southwest Logo
5:15 am - 10:35 amBOS-SAT
6h 20m1 stop
$308Southwest
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Fri, Nov 7 - Mon, Nov 17
Delta Logo
1:50 pm - 6:59 pmSAT-BOS
4h 09mnonstop
Delta Logo
6:10 am - 5:04 pmBOS-SAT
11h 54m1 stop
$309Delta
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Sat, Oct 11 - Tue, Oct 21
Southwest Logo
7:40 am - 4:55 pmSAT-BOS
8h 15m1 stop
Southwest Logo
5:00 am - 10:10 amBOS-SAT
6h 10m1 stop
$316Southwest
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Sat, Oct 18 - Wed, Oct 22
American Airlines Logo
1:32 pm - 11:56 pmSAT-MHT
9h 24m1 stop
American Airlines Logo
5:15 pm - 10:56 pmMHT-SAT
6h 41m1 stop
$334American Airlines
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Tue, Nov 4 - Tue, Nov 18
United Airlines Logo
7:07 am - 1:47 pmSAT-MHT
5h 40m1 stop
United Airlines Logo
2:27 pm - 8:15 pmMHT-SAT
6h 48m1 stop
$407United Airlines
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Tue, Nov 4 - Wed, Nov 19
United Airlines Logo
7:07 am - 1:47 pmSAT-MHT
5h 40m1 stop
United Airlines Logo
2:27 pm - 11:16 pmMHT-SAT
9h 49m2 stops
$412United Airlines
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Tue, Nov 4 - Sat, Nov 15
American Airlines Logo
7:21 am - 3:33 pmSAT-MHT
7h 12m1 stop
American Airlines Logo
5:19 pm - 11:05 pmMHT-SAT
6h 46m1 stop
$424American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for San Antonio to New Hampshire flights

Get data-powered insights and trends into flights from San Antonio to New Hampshire to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Antonio to New Hampshire?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to New Hampshire, 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 Antonio to New Hampshire is September, when tickets cost $299 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $417 and $396 respectively.

What’s the cheapest day of the week to fly from San Antonio to New Hampshire?

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

If your flying dates are flexible, you should consider flying to New Hampshire on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from San Antonio to New Hampshire. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

How far in advance should I book a flight from San Antonio to New Hampshire?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to New Hampshire, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Antonio to New Hampshire, you should book around 5 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$92
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from San Antonio to Boston

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from San Antonio to New Hampshire?

    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 Antonio to New Hampshire.

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

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

    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 San Antonio to New Hampshire 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 San Antonio to New Hampshire?

    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 San Antonio to New Hampshire 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 New Hampshire?

    The cheapest time of day to fly to New Hampshire is generally in the afternoon, when round-trip flights cost $397 on average. Morning departures are around 4% cheaper than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally in the evening, which is peak travel time and where the average cost of a ticket is $470.

Reviews of the top airlines flying from San Antonio to New Hampshire

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to New Hampshire. 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 Antonio to New Hampshire? 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 4242 reviews
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

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

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

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.

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Our bags took a long time to get unloaded once we landed.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Everything you need to know for your flight from San Antonio to New Hampshire

Information on your arrival and departure airports

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