Cheap Flights from Portland, ME to Chicago, IL from $105

Return flight: Chicago – Portland

On Cheapflightsplus.com you will find 10 direct and 388 connecting flights from Portland to Chicago. You can compare airfare deals from 4 airlines and multiple travel sites from $105, book and save on cheap plane tickets and last minute offers. Also check out PWM-CHI flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Portland to Chicago Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $105 (one-way), $180 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Portland to Chicago. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:00 — 07:53
06:00 — 07:53 UA1834 United Airlines
Portland — Chicago
2h 53m
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from$134
06:00 — 07:51
06:00 — 07:51 UA1857 United Airlines
Portland — Chicago
2h 51m
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from$149
06:14 — 08:05
06:14 — 08:05 UA1030 United Airlines
Portland — Chicago
2h 51m
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from$152
11:43 — 13:46
11:43 — 13:46 UA5697 United Airlines
Portland — Chicago
3h 3m
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from$134
16:43 — 18:40
16:43 — 18:40 UA1564 United Airlines
Portland — Chicago
2h 57m
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from$134
16:56 — 18:47
16:56 — 18:47 UA2466 United Airlines
Portland — Chicago
2h 51m
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from$149
18:20 — 20:25
18:20 — 20:25 UA3520 United Airlines
Portland — Chicago
3h 5m
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from$153
18:20 — 20:25
18:20 — 20:25 UA3695 United Airlines
Portland — Chicago
3h 5m
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from$153
18:20 — 20:25
18:20 — 20:25 UA5327 United Airlines
Portland — Chicago
3h 5m
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from$307
18:23 — 20:23
18:23 — 20:23 UA4744 United Airlines
Portland — Chicago
3h
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from$149
05:35 — 09:43
05:35 — 07:25 UA3552 United Airlines
Portland — Washington D.C.
1h 5m stop
08:30 — 09:43 UA2440 United Airlines
Washington D.C. — Chicago
5h 8m
including layover
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from$158
05:45 — 09:36
05:45 — 07:33 UA3415 United Airlines
Portland — Washington D.C.
47m stop
08:20 — 09:36 UA1775 United Airlines
Washington D.C. — Chicago
4h 51m
including layover
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from$156
08:00 — 13:07
08:00 — 09:31 UA3639 United Airlines
Portland — Newark
1h 58m stop
11:29 — 13:07 UA1875 United Airlines
Newark — Chicago
6h 7m
including layover
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from$153
08:00 — 13:07
08:00 — 09:31 UA3424 United Airlines
Portland — Newark
1h 58m stop
11:29 — 13:07 UA1875 United Airlines
Newark — Chicago
6h 7m
including layover
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from$156
09:30 — 14:33
09:30 — 11:20 UA3683 United Airlines
Portland — Washington D.C.
2h stop
13:20 — 14:33 UA2331 United Airlines
Washington D.C. — Chicago
6h 3m
including layover
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from$139
10:05 — 14:29
10:05 — 11:55 UA3438 United Airlines
Portland — Washington D.C.
1h 22m stop
13:20 — 14:33 UA2331 United Airlines
Washington D.C. — Chicago
5h 24m
including layover
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from$156
10:50 — 14:55
10:50 — 12:23 UA3623 United Airlines
Portland — Newark
57m stop
13:20 — 14:55 UA2053 United Airlines
Newark — Chicago
5h 5m
including layover
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from$156
12:15 — 16:48
12:15 — 14:26 UA3699 United Airlines
Portland — Washington D.C.
1h 9m stop
15:35 — 16:48 UA1057 United Airlines
Washington D.C. — Chicago
5h 33m
including layover
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from$139
12:15 — 18:37
12:15 — 14:26 UA3699 United Airlines
Portland — Washington D.C.
2h 44m stop
17:10 — 18:37 UA2497 United Airlines
Washington D.C. — Chicago
7h 22m
including layover
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from$139
14:14 — 18:37
14:05 — 16:16 UA3593 United Airlines
Portland — Washington D.C.
45m stop
17:10 — 18:37 UA2497 United Airlines
Washington D.C. — Chicago
5h 23m
including layover
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from$140
14:22 — 18:30
14:08 — 16:19 UA3624 United Airlines
Portland — Washington D.C.
55m stop
17:18 — 18:45 UA2497 United Airlines
Washington D.C. — Chicago
5h 8m
including layover
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from$153
15:04 — 19:57
15:04 — 16:44 UA3620 United Airlines
Portland — Newark
1h 31m stop
18:15 — 19:57 UA254 United Airlines
Newark — Chicago
5h 53m
including layover
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from$156
15:06 — 20:10
15:06 — 16:55 UA3620 United Airlines
Portland — Newark
1h 34m stop
18:29 — 20:10 UA2310 United Airlines
Newark — Chicago
6h 4m
including layover
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from$158
16:57 — 00:04
+1 day
16:57 — 20:18 F91929 Frontier Airlines
Portland — Orlando
1h 39m stop
21:57 — 00:04 F92791 Frontier Airlines
Orlando — Chicago
8h 7m
including layover
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from$105
16:57 — 08:22
+1 day
16:57 — 20:18 F91929 Frontier Airlines
Portland — Orlando
9h 52m stop
06:10 — 08:22 F93043 Frontier Airlines
Orlando — Chicago
16h 25m
including layover
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from$110
17:35 — 23:25
17:35 — 19:24 UA3616 United Airlines
Portland — Newark
2h 20m stop
21:44 — 23:25 UA1308 United Airlines
Newark — Chicago
6h 50m
including layover
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from$156
18:12 — 07:39
+1 day
18:58 — 22:30 F92621 Frontier Airlines
Portland — Orlando
8h 11m stop
13:10 — 15:06 F93853 Frontier Airlines
Orlando — Chicago
14h 27m
including layover
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from$118
18:12 — 12:57
+1 day
18:58 — 22:30 F92621 Frontier Airlines
Portland — Orlando
13h 14m stop
13:06 — 15:27 F93043 Frontier Airlines
Orlando — Chicago
19h 45m
including layover
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from$119
19:15 — 23:30
19:15 — 21:05 UA1429 United Airlines
Portland — Washington D.C.
1h 14m stop
22:19 — 23:30 UA1738 United Airlines
Washington D.C. — Chicago
5h 15m
including layover
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from$156
19:26 — 23:15
19:09 — 21:04 UA3582 United Airlines
Portland — Washington D.C.
55m stop
22:18 — 23:30 UA1738 United Airlines
Washington D.C. — Chicago
4h 49m
including layover
Find flight
from$153
*Departure and arrival times - local. Updated on August 6, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Portland to Chicago depends on and how to choose the most interesting flight option for you.

Distance between Portland and Chicago is 1425 miles. Time difference between the cities is 1h. Airplanes depart 05:35 to 20:52 from 1 Portland airport and arrive 05:35 to 20:52 to 7 Chicago airports. Average flight time is 2h 59m.

  • The fastest flight 2h 51m
  • Average flight time 2h 59m
  • The earliest flight 05:35
  • The latest flight 20:52
  • Distance 886 ml

The cheapest months to travel to Chicago are may (from 105 $), september (from 118 $), july (from 119 $).

The most expensive months are june (from 152 $), october (from 149 $), august (from 136 $).

What is the lowest airfare Portland to Chicago?

The cheapest plane ticket found by our users is $105. This airfare is for economy class on one-way F91929 flight by Frontier Airlines for May 24, 2025 which leaves Portland Intl Jetport in Portland at 16:57 am and arrives at Chicago O'Hare International at 00:04.

Economy class
$105
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Business class
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First class
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Popular Airlines on the Route

The flight Portland — Chicago is served by 4 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 5 departures per week at the price of from $ 105 . And the most expensive tickets are offered by United Airlines airline - from $ 858.

Direct flights

There are 10 nonstop flights on the route. The fastest direct flight is UA1857 by United Airlines takes 2h 51m and the cheapest is F91929 by Frontier Airlines for $134.

  • UA - United Airlines
    from $134
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See more direct flights

Connecting Flights

There are 388 flights with layovers on the route. The fastest connecting flight is UA3582 by United Airlines takes 4h 49m and the cheapest is F91929 by Frontier Airlines for $105.

  • F9 - Frontier Airlines
    from $105
    Find
  • SY - Sun Country Airlines
    from $167
    Find
  • MX - Mexicana
    from $248
    Find
  • UA - United Airlines
    from $139
    Find
See more connecting flights

Airports

You can fly from Portland to Chicago from 1 airports (Portland Intl Jetport).

Portland airports

  • Portland Intl Jetport-PWM
    from $105
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Chicago airports

  • O'Hare International-ORD
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  • Midway-MDW
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  • Dupage County-DPA
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  • Chicago FSS-CHI
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  • Merrill C Meigs (closed)-CGX
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  • Pal-Waukee-PWK
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  • Chicago NAS-NOH
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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