In terms of precipitation, rainfall in Portsmouth, New Hampshire ranges from 2.2 - 5.1 inches per month. November is typically the wettest month, when rainfall can reach 5.1 in. August is typically the driest time to visit Portsmouth, New Hampshire when rainfall is around 2.2 in.

If weather is an important factor for your trip to Portsmouth, New Hampshire, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

What is the cheapest time of day to fly from CVG to PSM?

When flying from Cincinnati to Portsmouth, New Hampshire, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Cincinnati-Portsmouth, New Hampshire flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cincinnati-Portsmouth, New Hampshire flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cincinnati-Portsmouth, New Hampshire flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Cincinnati-Portsmouth, New Hampshire flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cincinnati-Portsmouth, New Hampshire flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Cincinnati to Portsmouth that include hotel bookings?

Yes. In addition to deals on Cincinnati to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Cincinnati to Portsmouth?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cincinnati to Portsmouth.

Can I find deals for business class flights from Cincinnati to Portsmouth?

Yes. Cheapflights offers flight deals from Cincinnati to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$251+ Cheap Flights from Cincinnati to Portsmouth, NH

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Cheap flight deals from Cincinnati to Portsmouth

One-way

One-way flights from Cincinnati to Portsmouth
Search for one-way flight options from Cincinnati to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Tue 9/298:57 pm -

3 stops45h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$251

Fri 11/138:40 pm -

2 stops23h 17m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$615

Find flight deals from Cincinnati to Portsmouth

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	September
Cheapest in	December
Average price	$454

Provider with most accurate pricing for Cincinnati Cinci./N. Kentucky-Portsmouth Pease Intl flight deals.

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Provider most trusted by Cheapflights users for Cincinnati Cinci./N. Kentucky-Portsmouth Pease Intl flights.

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Cincinnati to Portsmouth that are best for you.

Fly from

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Route

Depart

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Price

Cheapest round-trip

CincinnatiPortsmouth

CVG Cincinnati Cinci./N. Kentucky - PSM Portsmouth Pease Intl

CVGPSM

Cincinnati Cinci./N. Kentucky

Tue 9/29

8:57 pm-6:07 pm

3 stops45h 10m

Portsmouth Pease Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$251

Quickest round-trip

CincinnatiPortsmouth

CVG Cincinnati Cinci./N. Kentucky - PSM Portsmouth Pease Intl

CVGPSM

Cincinnati Cinci./N. Kentucky

Fri 11/13

8:40 pm-7:57 pm

2 stops23h 17m

Portsmouth Pease Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$615

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Sorted by cheapest first

Compare providers for flights from Cincinnati to Portsmouth

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cincinnati to Portsmouth in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Cincinnati-Portsmouth, New Hampshire flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cincinnati-Portsmouth, New Hampshire flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cincinnati-Portsmouth, New Hampshire flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Cincinnati-Portsmouth, New Hampshire flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cincinnati-Portsmouth, New Hampshire flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cincinnati to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Cincinnati with our price prediction graph.

CVG-PSM

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Can I find deals for flights from Cincinnati to Portsmouth that include hotel bookings?
Yes. In addition to deals on Cincinnati to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Cincinnati to Portsmouth?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cincinnati to Portsmouth.
Can I find deals for business class flights from Cincinnati to Portsmouth?
Yes. Cheapflights offers flight deals from Cincinnati to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$251+ Cheap flights from Cincinnati to Portsmouth, NH (CVG - PSM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Cincinnati to Portsmouth with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Cincinnati to Portsmouth

One-way flights from Cincinnati to PortsmouthSearch for one-way flight options from Cincinnati to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Search for one-way flight options from Cincinnati to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Find flight deals from Cincinnati to Portsmouth

Most accurate provider

Most trusted provider

Popular in

Cheapest in

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Cincinnati to Portsmouth that are best for you.

Compare providers for flights from Cincinnati to Portsmouth

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cincinnati to Portsmouth in September.

Best time to book a flight from Cincinnati to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Cincinnati with our price prediction graph.

Related info for your journey

Can I find deals for flights from Cincinnati to Portsmouth that include hotel bookings?

How can I find direct flights from Cincinnati to Portsmouth?

Can I find deals for business class flights from Cincinnati to Portsmouth?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cincinnati to Portsmouth

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Complete your trip

Complete your trip to Portsmouth by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Cincinnati to Portsmouth by cabin class

Find flights from Cincinnati to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Cincinnati and Portsmouth flights

Browse other Cincinnati and Portsmouth flight options. Last updated on September 10, 2026.

Other flights from Cincinnati

Browse through other flights departing from Cincinnati. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

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Explore flights to Portsmouth departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

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One-way flights from Cincinnati to Portsmouth
Search for one-way flight options from Cincinnati to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.