$48 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 12/31. 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 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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Cheap Flights from San Antonio to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Bostonnonstop$299
Portland
Portland1 stop$317
Boston
Bostonnonstop$299
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

Sat, Dec 6 - Fri, Dec 12
Delta Logo
2:01 pm - 7:04 pmSAT-BOS
4h 03mnonstop
Delta Logo
9:20 am - 1:17 pmBOS-SAT
4h 57mnonstop
$299Delta
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Tue, Nov 11 - Fri, Nov 14
Spirit Airlines Logo
7:37 pm - 5:31 pmSAT-BOS
20h 54m3 stops
Spirit Airlines Logo
3:55 pm - 10:03 amBOS-SAT
19h 08m2 stops
$301Spirit Airlines
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Fri, Nov 21 - Mon, Dec 1
Multiple Airlines Logo
5:09 pm - 12:44 amSAT-BOS
6h 35m1 stop
Multiple Airlines Logo
10:59 am - 3:59 pmBOS-SAT
30h 00m1 stop
$304Multiple Airlines
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Mon, Nov 24 - Tue, Dec 2
Multiple Airlines Logo
8:33 pm - 10:04 amSAT-BOS
12h 31m1 stop
Multiple Airlines Logo
9:54 pm - 5:12 pmBOS-SAT
20h 18m2 stops
$305Multiple Airlines
Find Deal
Sat, Nov 22 - Fri, Jan 2
Frontier Logo
7:04 pm - 10:01 amSAT-BOS
13h 57m1 stop
Frontier Logo
6:00 am - 5:01 pmBOS-SAT
12h 01m1 stop
$314Frontier
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Mon, Dec 22 - Fri, Jan 2
Frontier Logo
5:56 pm - 1:19 amSAT-BOS
6h 23m1 stop
Frontier Logo
10:57 am - 5:01 pmBOS-SAT
7h 04m1 stop
$316Frontier
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Tue, Nov 18 - Sat, Nov 22
Southwest Logo
5:45 am - 12:10 pmSAT-PWM
5h 25m1 stop
Southwest Logo
5:40 pm - 11:25 pmPWM-SAT
6h 45m1 stop
$317Southwest
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Tue, Dec 30 - Fri, Jan 2
Southwest Logo
5:20 am - 2:55 pmSAT-BOS
8h 35m1 stop
Southwest Logo
5:40 pm - 12:15 amBOS-SAT
7h 35m1 stop
$347Southwest
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Tue, Nov 18 - Sat, Nov 22
American Airlines Logo
1:40 pm - 9:35 pmSAT-PWM
6h 55m1 stop
American Airlines Logo
5:21 pm - 11:05 pmPWM-SAT
6h 44m1 stop
$442American Airlines
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Wed, Nov 12 - Sun, Nov 16
American Airlines Logo
6:50 am - 11:58 pmSAT-MHT
16h 08m1 stop
American Airlines Logo
6:00 am - 11:05 pmMHT-SAT
18h 05m1 stop
$477American 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 August, when tickets cost $309 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of round-trip tickets is $420 and $403 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 Thursday, 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 Tuesday and avoiding Sundays 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 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$48
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly with an average 14% 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 $396 on average. Morning departures are around 6% 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 $484.

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 4241 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

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

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

The only thing to like was that we eventually got to our destination

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

We didn't take off until an hour after we boarded.

The flight was fine. This survey is not. There is no option for N/A so items which don’t apply to my experience still must be rated. In those instances I give a “3” rating which ultimately skews the results.

The actual trip was fine, however, the changes made to our flights and the layovers were had to endure were awful.

Flight from Dallas to OKC was good, but my trip was interrupted due to a delayed flight from Austin to DFW, which happens all the time. I frequently miss my connection from DFW and American can never seem to make this work!

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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