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$85+ Cheap flights from Portland, ME (PWM) to Chicago (CHI)

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — CHI
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Chicago are usually found in September or May, booked 88 days in advance, depart on a Wednesday or Friday and return on a Saturday

Cheap flight deals from Portland to Chicago

Cheapest flights from Portland to Chicago
Explore the most affordable flight options available from Portland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 8, 2026.

This Orbitz deal was found by Cheapflights users on 6/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 am
PWM
-
ORD
1 stop11h 15m
JetBlue
Sat 8/226:00 am
ORD
-
PWM
1 stop6h 45m
JetBlue
Deal found 6/7$291
This JetBlue deal was found by Cheapflights users on 6/8. 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 7/172:40 pm
PWM
-
ORD
1 stop8h 18m
JetBlue
Mon 7/206:00 am
ORD
-
PWM
1 stop6h 45m
JetBlue
Deal found 6/8$292
This Expedia deal was found by Cheapflights users on 6/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1312:44 pm
PWM
-
ORD
1 stop5h 45m
Multiple Airlines
Wed 7/156:00 am
ORD
-
PWM
1 stop6h 45m
Multiple Airlines
Deal found 6/7$296
This JetBlue deal was found by Cheapflights users on 6/7. 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 7/32:30 pm
PWM
-
ORD
1 stop8h 00m
JetBlue
Mon 7/66:00 am
ORD
-
PWM
1 stop6h 45m
JetBlue
Deal found 6/7$300
This American Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 7/226:10 am
PWM
-
ORD
Nonstop3h 11m
American Airlines
Tue 7/289:09 pm
ORD
-
PWM
Nonstop2h 34m
American Airlines
Deal found 6/6$307
This Southwest deal was found by Cheapflights users on 6/5. 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 7/43:10 pm
PWM
-
MDW
Nonstop2h 40m
Southwest
Tue 7/76:15 pm
MDW
-
PWM
Nonstop2h 20m
Southwest
Deal found 6/5$307
This JetBlue deal was found by Cheapflights users on 6/8. 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 7/152:40 pm
PWM
-
ORD
1 stop8h 18m
JetBlue
Sun 7/196:00 am
ORD
-
PWM
1 stop5h 30m
JetBlue
Deal found 6/8$308
This JetBlue deal was found by Cheapflights users on 6/5. 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 6/192:30 pm
PWM
-
ORD
1 stop8h 00m
JetBlue
Tue 6/236:00 am
ORD
-
PWM
1 stop5h 30m
JetBlue
Deal found 6/5$313
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Wed 7/86:00 am
PWM
-
ORD
Nonstop3h 00m
United Airlines
Sat 7/116:08 pm
ORD
-
PWM
Nonstop2h 33m
United Airlines
Deal found 6/5$317
This Southwest deal was found by Cheapflights users on 6/4. 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.
Wed 7/17:30 am
PWM
-
MDW
Nonstop2h 35m
Southwest
Wed 7/85:30 pm
MDW
-
PWM
1 stop4h 30m
Southwest
Deal found 6/4$317
This Southwest deal was found by Cheapflights users on 6/5. 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.
Wed 7/87:30 am
PWM
-
MDW
Nonstop2h 35m
Southwest
Sat 7/114:50 pm
MDW
-
PWM
1 stop5h 55m
Southwest
Deal found 6/5$322
This Delta deal was found by Cheapflights users on 6/7. 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.
Tue 6/305:41 pm
PWM
-
ORD
1 stop6h 07m
Delta
Wed 7/86:00 am
ORD
-
PWM
1 stop17h 59m
Delta
Deal found 6/7$326

Find flight deals from Portland to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$291
(Orbitz)

One-way from

$85
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$356

Good round-trip deal

$391 or less

Good one-way deal

$197 or less
Provider with most accurate pricing for Portland-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Chicago (CHI) flights.
Search Deals
From Portland to Chicago (CHI)
Search Deals
One-way flight from Portland to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Portland to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Portland to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Chicago 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 June 8, 2026.
Use the filters below to find and compare flights from Portland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandChicago

PWM - ORD

PWMORD

Portland

Fri 7/3

11:48 am-5:02 pm

1 stop6h 14m

Chicago O'Hare Intl

Wed 7/8

2:07 pm-12:59 am

2 stops9h 52m

$332

PortlandChicago

PWM - MDW

PWMMDW

Portland

Thu 8/20

6:00 am-4:15 pm

2 stops11h 15m

Chicago Midway

Sun 8/23

1:27 pm-12:59 am

2 stops10h 32m

$347

PortlandChicago

PWM - MDW

PWMMDW

Portland

Wed 7/15

7:10 pm-11:15 pm

1 stop5h 05m

Chicago Midway

Sat 7/18

4:50 pm-11:45 pm

1 stop5h 55m

$357

PortlandChicago

PWM - ORD

PWMORD

Portland

Wed 11/4

12:50 pm-4:33 pm

1 stop4h 43m

Chicago O'Hare Intl

Mon 11/9

5:30 am-12:18 pm

1 stop5h 48m

$357

PortlandChicago

PWM - MDW

PWMMDW

Portland

Mon 7/13

5:35 am-10:35 am

1 stop6h 00m

Chicago Midway

Wed 7/15

6:15 pm-9:35 pm

Nonstop2h 20m

$364

PortlandChicago

PWM - MDW

PWMMDW

Portland

Thu 8/13

7:40 am-9:10 am

Nonstop2h 30m

Chicago Midway

Sun 8/16

6:10 pm-9:30 pm

Nonstop2h 20m

$384

PortlandChicago

PWM - ORD

PWMORD

Portland

Wed 7/22

6:25 am-1:03 pm

2 stops7h 38m

Chicago O'Hare Intl

Tue 7/28

11:30 am-11:30 pm

2 stops11h 00m

$384

PortlandChicago

PWM - MDW

PWMMDW

Portland

Wed 7/8

5:30 am-11:00 am

2 stops6h 30m

Chicago Midway

Thu 7/9

7:00 pm-12:10 am

1 stop4h 10m

$384

PortlandChicago

PWM - ORD

PWMORD

Portland

Wed 7/1

6:00 am-8:00 am

Nonstop3h 00m

Chicago O'Hare Intl

Tue 7/7

11:00 am-2:31 pm

Nonstop2h 31m

$387

PortlandChicago

PWM - ORD

PWMORD

Portland

Wed 7/8

4:52 pm-11:53 pm

2 stops8h 01m

Chicago O'Hare Intl

Mon 7/13

9:45 am-5:54 pm

1 stop7h 09m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/7

Showing 1-10 of 45 resultsSorted by cheapest first
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5

Compare providers for flights from Portland to Chicago

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 Portland to Chicago in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Portland, Maine-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Chicago 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 Portland, Maine-Chicago 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 Portland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Portland 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 Portland to Chicago

What is the cheapest month to book a flight from Portland, Maine to Chicago?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Chicago (average of $130). Flying from Portland, Maine to Chicago in January is currently the most expensive (average of $209). 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 PWM to CHI?

Find hourly flight availability from Portland to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 8, 2026.

One of the essential ways to save on airfare from Portland, Maine to Chicago is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 22% on airfare.

Weekly flight availability from Portland, Maine to Chicago

Explore weekly flight availability from Portland to Chicago. 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 June 8, 2026.

The most flights from PWM to CHI are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from Portland, Maine to Chicago?

How far ahead should I book a flight from Portland, Maine to Chicago?

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland, Maine to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated June 8, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Portland to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,249 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Overall

7.9

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
7.9
Good
4,249 reviews
Southwest
7.9
Good
4,249 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Overall

7.9

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
United Airlines
7.4
Good
9,781 reviews
Southwest
7.9
Good
4,249 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Overall

7.9

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
American Airlines
7.1
Good
11,640 reviews
Southwest
7.9
Good
4,249 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Overall

7.9

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Related info for your journey

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

  • What airport do you fly from for flights from Portland to Chicago?

    For a flight from Portland to Chicago, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city. Portland is the only Portland airport and it handles 8 outbound flights to Chicago per day. 3 airlines have flights to Chicago from Portland on a regular basis.

  • How long is the flight from Portland, Maine to Chicago?

    For as low as $387, Delta can have you in Chicago from Portland, Maine in 3h. There are 897 mi between Portland, Maine and Chicago. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Portland, Maine to Chicago round-trip?

    Cheapflights users have booked flights from Portland, Maine to Chicago round-trip from $209. Other airlines that can offer you cheap pricing are United Airlines, from $229, and Southwest, from $267. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Portland, Maine to Chicago one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $114. Users have also found prices from $115 and $134 on American Airlines and United Airlines, respectively.

  • What are the most reliable airlines from Portland, Maine to Chicago?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland, Maine to Chicago on time: United Airlines (90%), SkyWest Airlines (87%), Air New Zealand (86%).

  • What are the cheapest flights from Portland, Maine to Chicago?

    On average you can expect to pay $967 for a flight from Portland, Maine to Chicago. The cheapest flight overall is $137 while the most popular route, (Portland - Chicago O'Hare Intl) is currently priced at $169.

  • Can I find deals for flights from Portland to Chicago that include hotel bookings?

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

  • How can I find direct flights from Portland to Chicago?

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

  • Can I find deals for business class flights from Portland to Chicago?

    Yes. Cheapflights offers flight deals from Portland to Chicago 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 Portland, Maine to Chicago?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Chicago (average of $130). Flying from Portland, Maine to Chicago in January is currently the most expensive (average of $209). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Benton Harbor
Lansing
Merrillville
Hammond
Porter

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Top 3 airlines flying from Portland to Chicago

Discover the top 3 airlines that operate flights from Portland to Chicago. 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 June 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$209Average$320FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$366FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$267Average$397FlexibilityNo cancel feeOn-time63%

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