Cheap Flights from Portsmouth (PSM) to Houston (IAH)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to George Bush Intercontinental Airport (IAH)

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH) cost?
Secure a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between PSM and IAH. You'll usually find the lowest fares during off-peak months.
Which airlines fly direct from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
There are no direct flights from Portsmouth, NH (PSM-Portsmouth Intl.) to George Bush Intercontinental Airport (IAH). However, you can find other airports with nonstop flights. Hop on your plane at Logan Intl. Airport (BOS) and travel straight to Houston without any detours.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from PSM to IAH. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
You'll need to hop on a flight with a layover if you're traveling from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PSM to IAH?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
Select a flight from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH) that takes off before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH) last-minute?
Holding off until right before your break to book a ticket from PSM to IAH often results in higher prices. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a PSM to IAH flight and hotel package?
Compared with arranging flights and hotels separately, booking a PSM to IAH flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to George Bush Intercontinental Airport (IAH)?
Typically, you can reschedule or cancel your PSM to IAH flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need further details, visit our Customer Service portal.

Travel information

Origin airport
Portsmouth Intl.
Destination airport
George Bush Intercontinental
Distance
1625 mi

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Portsmouth to Houston Flights

The cheapest times to fly from Portsmouth to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portsmouth to Houston are during the month of . You can find some of the cheapest flights from Portsmouth to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portsmouth to Houston

Sunday is one of the best days to book for cheap flights from Portsmouth to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portsmouth to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portsmouth to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portsmouth to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portsmouth to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portsmouth to Houston Flights

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*Available to One Key members.