$123 Find Cheap Flights from Seattle to New Hampshire - Compare and Save

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Cheap Flights from Seattle to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Boston
Boston1 stop$331
Lebanon
Lebanon1 stop$660
Portland
Portland1 stop$245
Boston
Boston1 stop$331
Lebanon
Lebanon1 stop$660
Portland
Portland1 stop$245
Booking Insights

KAYAK's insights & trends for Seattle to New Hampshire flights

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

How much is a round-trip flight from Seattle to New Hampshire?

Flight prices are below average for this route right now.

Flights to New Hampshire from Seattle usually cost between $456 and $502 in November.
The lowest price found in the past 5 days was $305 on Southwest (Nov 11-Nov 14).

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 evening, when round-trip flights cost $419 on average. Morning departures are around 19% more expensive than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally in the morning, which is peak travel time and where the average cost of a ticket is $499.

What is the cheapest month to fly from Seattle to New Hampshire?

The cheapest month for flights from Seattle to New Hampshire is January, when tickets cost $328 (return) on average. On the other hand, the most expensive months are May and December, when the average cost of round-trip tickets is $986 and $927 respectively.

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

When flying from Seattle to New Hampshire, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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

To get a below average price on the flight from Seattle to New Hampshire, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low season

January

Cheapest flight

$123
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 49% increase in price.
Flight from Seattle to Portland

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from Seattle 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 Seattle to New Hampshire.

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

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

 
Need help choosing which airline to fly with from Seattle 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 4190 reviews
8.1Boarding
7.5Entertainment
8.6Crew
8.0Comfort
7.0Food
Airline reviews

Terrible delay today. also, waited 90 minutes for baggage to unload in Seattle earlier in the week.

4.0 OkayHervey, Sep 2026
Read more Southwest reviews

Terrible delay today. also, waited 90 minutes for baggage to unload in Seattle earlier in the week.

Overall good, just screaming kids in the area the whole flight.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

The people of SW Airlines really make it nice to fly.

Really full flight, checked in ASAP and still mid Cs.

More assistance and clarity for travelers with gate checking and lap children

Wheelchair folks are great. Food not to my liking. Crew more interested in their lives than the passengers. Got the job done but just the minimum.

Flight attendants and crew were great! This plane was fine. It was clean and everything worked properly. Now, the gate change was not communicated. No text or information. It wasn't far with the gate change but it still changed without any communication. Not sure if this is on American or Kayakl. Also, internet was the worst. I would never have ATT. 3+hr flight and weak internet. I think I watched the commercials to get on at least 6 times. Terrible internet!

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Everything was great except it became so hot on the plane I couldn’t sleep on my red eye flight. It didn’t really cool down till we started descending.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Airplane was cold. Flight attendants were rude. Phone charger did not work. No food available.

Experience was fine. Seats were cramped, and we had to wait for repairs before we could take of. Even though the door remained open, we were warned that leaving the plane could cause difficulty trying to fly out later. Staff was pleasant, and climate control was fortunately working. We had trouble at the DFW terminal, but I don't think that was AA's fault.

This flight was fine but had no time to breathe as the connection was late from Sea to ORD.. Super stressful. If we checked bags, the trip would have been very distressed.

More options for your flight from Seattle to New Hampshire

Complete your trip to New Hampshire with a hotel stay or car rental