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$69+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ORD
Aug 6 — Aug 131
Mi 8/6
Mi 8/13
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 August 1, 2025.

Round-trip from

$137
(Southwest)

One-way from

$69
(Southwest)

Popular in

March

Cheapest in

September

Average price

$199

Good round-trip deal

$196 or less

Good one-way deal

$198 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. 9% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 1, 2025.

This Southwest deal was found by Cheapflights users on 7/31. 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.
Do 9/410:45 amBOS - MDW
1 stop5h 05mSouthwest
So 9/710:00 amMDW - BOS
Nonstop2h 25mSouthwest
Deal found 7/31$137
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Di 8/1911:00 amBOS - ORD
Nonstop2h 50mUnited Airlines
So 8/316:30 amORD - BOS
Nonstop2h 26mUnited Airlines
Deal found 7/31$137
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 9/145:00 amBOS - ORD
Nonstop2h 51mAmerican Airlines
So 9/216:05 amORD - BOS
Nonstop2h 27mAmerican Airlines
Deal found 7/31$138
This Southwest deal was found by Cheapflights users on 7/29. 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.
Do 9/410:45 amBOS - ORD
1 stop6h 40mSouthwest
So 9/71:50 pmORD - BOS
1 stop5h 45mSouthwest
Deal found 7/29$146
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 9/47:55 pmBOS - ORD
Nonstop3h 01mDelta
Sa 9/610:15 amORD - BOS
Nonstop2h 33mDelta
Deal found 7/31$147
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 8/183:37 pmBOS - ORD
1 stop7h 45mSpirit Airlines
Mi 8/208:12 pmORD - BOS
1 stop14h 06mSpirit Airlines
Deal found 7/30$150
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 9/411:00 amBOS - ORD
Nonstop2h 50mMultiple Airlines
Di 9/911:57 amORD - BOS
1 stop11h 00mMultiple Airlines
Deal found 7/31$151
This Rumbo deal was found by Cheapflights users on 7/29. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 9/47:00 amBOS - ORD
Nonstop2h 56mJetBlue
So 9/76:45 amORD - BOS
1 stop6h 04mJetBlue
Deal found 7/29$153
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 9/165:59 pmMHT - ORD
Nonstop2h 45mAmerican Airlines
Mi 9/176:49 pmORD - MHT
Nonstop2h 35mAmerican Airlines
Deal found 7/30$181
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sa 8/306:00 amMHT - MDW
Nonstop2h 25mSouthwest
Sa 9/65:40 pmMDW - MHT
Nonstop2h 10mSouthwest
Deal found 7/31$181
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sa 9/69:40 amMHT - ORD
1 stop5h 49mUnited Airlines
Mi 9/108:50 amORD - MHT
1 stop5h 07mUnited Airlines
Deal found 7/31$201
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 9/58:59 amBOS - MDW
1 stop8h 44mAllegiant Air
Mo 9/87:50 pmMDW - BOS
1 stop12h 53mAllegiant Air
Deal found 7/30$206

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 August 1, 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

Do 9/4

10:45 am-2:50 pm

1 stop5h 05m

Chicago Midway

So 9/7

10:00 am-1:25 pm

Nonstop2h 25m

$137

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Di 8/19

12:30 pm-2:20 pm

Nonstop2h 50m

Chicago O'Hare Intl

Fr 8/22

6:30 am-9:56 am

Nonstop2h 26m

$137

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

So 9/14

5:00 am-6:51 am

Nonstop2h 51m

Chicago O'Hare Intl

So 9/21

6:05 am-9:32 am

Nonstop2h 27m

$138

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Do 9/4

10:45 am-4:25 pm

1 stop6h 40m

Chicago O'Hare Intl

So 9/7

1:50 pm-8:35 pm

1 stop5h 45m

$146

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Do 9/4

7:55 pm-9:56 pm

Nonstop3h 01m

Chicago O'Hare Intl

Sa 9/6

10:15 am-1:48 pm

Nonstop2h 33m

$147

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Mo 8/18

3:37 pm-10:22 pm

1 stop7h 45m

Chicago O'Hare Intl

Mi 8/20

8:12 pm-11:18 am

1 stop14h 06m

$150

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Do 9/4

11:00 am-12:50 pm

Nonstop2h 50m

Chicago O'Hare Intl

Di 9/9

11:57 am-11:57 pm

1 stop11h 00m

$151

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Do 9/4

7:00 am-8:56 am

Nonstop2h 56m

Chicago O'Hare Intl

So 9/7

6:45 am-1:49 pm

1 stop6h 04m

$153

ManchesterChicago

MHT - ORD

MHTORD

Manchester

Di 9/16

5:59 pm-7:44 pm

Nonstop2h 45m

Chicago O'Hare Intl

Mi 9/17

6:49 pm-10:24 pm

Nonstop2h 35m

$181

ManchesterChicago

MHT - MDW

MHTMDW

Manchester

Sa 8/30

6:00 am-7:25 am

Nonstop2h 25m

Chicago Midway

Sa 9/6

5:40 pm-8:50 pm

Nonstop2h 10m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 August 1, 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 August 1, 2025.

The most flights from USNH to USIL are scheduled on a Monday (5 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 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 August 1, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,914 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • 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 United Airlines and American 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$427FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$209Average$492FlexibilityNo cancel feeOn-time71%

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