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$64+ Cheap flights from New Hampshire to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from New Hampshire to Illinois

Keep the following information in mind while searching for New Hampshire to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$125
(Kiwi.com)

One-way from

$64
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$199

Good round-trip deal

$342 or less

Good one-way deal

$178 or less
From New Hampshire to Illinois
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One-way flight from New Hampshire to Illinois
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Highest demand for flights based on searches. 6% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from New Hampshire to Illinois.
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Price to beat on a one-way flight from New Hampshire to Illinois.
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Find flight deals from New Hampshire to Illinois

Cheapest flights from New Hampshire to Illinois
Explore the most affordable flight options available from New Hampshire to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:15 pmBOS - ORD
1 stop8h 18mSpirit Airlines
Wed 10/86:00 amORD - BOS
1 stop6h 20mSpirit Airlines
Deal found 9/14$126
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:35 amBOS - MDW
1 stop5h 40mSouthwest
Mon 10/66:05 amMDW - BOS
Nonstop2h 15mSouthwest
Deal found 9/15$127
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:00 amBOS - ORD
Nonstop2h 56mJetBlue
Tue 10/710:08 amORD - BOS
Nonstop2h 29mJetBlue
Deal found 9/14$127
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:00 pmBOS - ORD
1 stop9h 45mSpirit Airlines
Sat 10/1811:55 amORD - BOS
1 stop11h 04mSpirit Airlines
Deal found 9/14$129
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:38 amBOS - ORD
1 stop9h 07mMultiple Airlines
Tue 10/76:00 amORD - BOS
1 stop6h 20mMultiple Airlines
Deal found 9/14$131
This JetBlue deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:40 pmBOS - ORD
Nonstop3h 15mJetBlue
Fri 10/37:50 pmORD - BOS
Nonstop2h 35mJetBlue
Deal found 9/15$132
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:15 amBOS - MDW
Nonstop2h 40mSouthwest
Sun 11/29:10 amMDW - BOS
1 stop8h 00mSouthwest
Deal found 9/14$133
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:00 amBOS - ORD
Nonstop2h 56mUnited Airlines
Sun 10/196:30 amORD - BOS
Nonstop2h 26mUnited Airlines
Deal found 9/15$133
This JetBlue deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:09 amBOS - ORD
Nonstop3h 13mJetBlue
Wed 10/157:13 pmORD - BOS
Nonstop2h 33mJetBlue
Deal found 9/15$135
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:00 pmBOS - ORD
1 stop9h 45mSpirit Airlines
Sat 10/1111:55 amORD - BOS
1 stop11h 04mSpirit Airlines
Deal found 9/14$136
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:50 amBOS - MDW
Nonstop2h 35mSouthwest
Sun 9/215:55 amMDW - BOS
Nonstop2h 15mSouthwest
Deal found 9/13$137
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:00 amBOS - ORD
Nonstop2h 55mUnited Airlines
Sat 9/277:30 amORD - BOS
Nonstop2h 32mUnited Airlines
Deal found 9/15$137

Cheapflights Fare Finder

 
Customize your flight search to find flights from New Hampshire to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from New Hampshire to Illinois that are best for you.

Fly from

New Hampshire

Fly to

Illinois

Route

Depart

Return

Price

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Thu 10/2

5:35 am-10:15 am

1 stop5h 40m

Chicago Midway

Mon 10/6

6:05 am-9:20 am

Nonstop2h 15m

$127

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Thu 11/20

10:40 am-12:40 pm

Nonstop3h 00m

Chicago O'Hare Intl

Wed 11/26

9:25 pm-12:45 am

Nonstop2h 20m

$137

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Sat 12/6

4:05 pm-6:02 pm

Nonstop2h 57m

Chicago O'Hare Intl

Mon 12/8

3:45 pm-7:12 pm

Nonstop2h 27m

$137

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Thu 9/25

3:17 pm-5:07 pm

Nonstop2h 50m

Chicago O'Hare Intl

Sun 9/28

7:30 am-11:02 am

Nonstop2h 32m

$137

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Wed 10/22

9:10 am-2:25 pm

1 stop6h 15m

Chicago Midway

Wed 10/29

10:10 am-7:20 pm

2 stops8h 10m

$142

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Fri 11/14

12:05 pm-8:10 pm

1 stop9h 05m

Chicago Midway

Mon 11/17

6:40 am-4:35 pm

1 stop8h 55m

$142

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Thu 10/30

6:55 am-4:25 pm

2 stops10h 30m

Chicago O'Hare Intl

Sat 11/1

1:30 pm-6:50 pm

1 stop4h 20m

$142

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Sun 10/26

5:00 am-12:45 pm

1 stop8h 45m

Chicago O'Hare Intl

Tue 10/28

1:50 pm-9:10 pm

1 stop6h 20m

$142

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Thu 11/20

5:35 pm-9:05 pm

1 stop4h 30m

Chicago Midway

Wed 11/26

4:05 pm-7:20 pm

Nonstop2h 15m

$143

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Fri 12/5

5:35 pm-9:05 pm

1 stop4h 30m

Chicago Midway

Sun 12/7

9:35 am-12:50 pm

Nonstop2h 15m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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Best time to book a flight from New Hampshire to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from New Hampshire with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from New Hampshire to Illinois

What is the cheapest month to book a flight from New Hampshire to Illinois?

Currently, August is the cheapest month in which you can book a flight from New Hampshire to Illinois (average of $245). Flying from New Hampshire to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from NH to IL?

Find hourly flight availability from New Hampshire to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Hampshire to Illinois as you normally would.

Weekly flight availability from New Hampshire to Illinois

Explore weekly flight availability from New Hampshire to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

The most flights from USNH to USIL are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Southwest and American Airlines from New Hampshire to Illinois to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from New Hampshire to Illinois?

    For as low as $137, Southwest can have you in Illinois from New Hampshire in 2h 57m. The distance between New Hampshire and Illinois is about 864 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from New Hampshire to Illinois one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $69. However, be on the lookout for offers from JetBlue and United Airlines, as they are both options that can get you from New Hampshire to Illinois for a low price.

  • Can I find deals for flights from New Hampshire to Illinois that include hotel bookings?

    Yes. In addition to deals on New Hampshire to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to Illinois?

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

  • Can I find deals for business class flights from New Hampshire to Illinois?

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

  • What is the cheapest month to book a flight from New Hampshire to Illinois?

    Currently, August is the cheapest month in which you can book a flight from New Hampshire to Illinois (average of $245). Flying from New Hampshire to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for New Hampshire to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from New Hampshire to Illinois

Discover the top 2 airlines that operate flights from New Hampshire to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$426FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$196Average$444FlexibilityNo cancel feeOn-time71%

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