OPO

$326 Find Cheap Flights from Illinois to Porto - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Porto departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Illinois to Porto

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Porto

Fri, Sep 25 - Thu, Oct 8
TAP AIR PORTUGAL Logo
6:00 pm - 4:50 pmORD  Chicago O'Hare Intl-OPO Porto
16h 50m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:00 am - 12:40 pmOPO  Porto-ORD Chicago O'Hare Intl
11h 40m1 stop Lisbon Humberto Delgado
$627TAP AIR PORTUGAL
Fri, Sep 25 - Thu, Oct 8
TAP AIR PORTUGAL Logo
6:00 pm - 4:50 pmORD  Chicago O'Hare Intl-OPO Porto
16h 50m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:00 am - 12:40 pmOPO  Porto-ORD Chicago O'Hare Intl
11h 40m1 stop Lisbon Humberto Delgado
$642TAP AIR PORTUGAL
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
11:05 am - 7:00 pmORD  Chicago O'Hare Intl-OPO Porto
25h 55m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Lisbon Humberto Delgado
Multiple Airlines Logo
9:15 pm - 4:58 pmOPO  Porto-ORD Chicago O'Hare Intl
25h 43m2 stops Lisbon Humberto Delgado Toronto Pearson Intl
$682Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
9:55 am - 3:00 pmORD  Chicago O'Hare Intl-OPO Porto
23h 05m2 stops Toronto Pearson Intl Lisbon Humberto Delgado
Multiple Airlines Logo
9:15 pm - 4:58 pmOPO  Porto-ORD Chicago O'Hare Intl
25h 43m2 stops Lisbon Humberto Delgado Toronto Pearson Intl
$695Multiple Airlines
Wed, Oct 14 - Tue, Nov 3
Iberia Logo
4:55 pm - 11:45 amORD  Chicago O'Hare Intl-OPO Porto
12h 50m1 stop Madrid Barajas
Iberia Logo
8:20 am - 2:55 pmOPO  Porto-ORD Chicago O'Hare Intl
12h 35m1 stop Madrid Barajas
$731Iberia
Fri, Oct 16 - Tue, Nov 3
Iberia Logo
4:55 pm - 11:45 amORD  Chicago O'Hare Intl-OPO Porto
12h 50m1 stop Madrid Barajas
Iberia Logo
8:20 am - 2:55 pmOPO  Porto-ORD Chicago O'Hare Intl
12h 35m1 stop Madrid Barajas
$731Iberia
Tue, Jan 19 - Thu, Jan 28
Lufthansa Logo
4:20 pm - 11:45 amORD  Chicago O'Hare Intl-OPO Porto
13h 25m1 stop Frankfurt am Main
Lufthansa Logo
6:00 am - 1:10 pmOPO  Porto-ORD Chicago O'Hare Intl
13h 10m1 stop Frankfurt am Main
$751Lufthansa
Tue, Oct 27 - Wed, Nov 4
Turkish Airlines Logo
9:15 pm - 3:25 pmORD  Chicago O'Hare Intl-OPO Porto
37h 10m1 stop Istanbul
Turkish Airlines Logo
4:25 pm - 7:20 pmOPO  Porto-ORD Chicago O'Hare Intl
32h 55m1 stop Istanbul
$752Turkish Airlines
Tue, Oct 6 - Thu, Oct 22
Turkish Airlines Logo
8:10 pm - 3:40 pmORD  Chicago O'Hare Intl-OPO Porto
37h 30m1 stop Istanbul
Turkish Airlines Logo
4:40 pm - 6:15 pmOPO  Porto-ORD Chicago O'Hare Intl
31h 35m1 stop Istanbul
$752Turkish Airlines
Wed, Jan 20 - Mon, Jan 25
Lufthansa Logo
9:50 pm - 11:55 pmORD  Chicago O'Hare Intl-OPO Porto
20h 05m1 stop Munich Franz Josef Strauss
Lufthansa Logo
1:45 pm - 6:25 pmOPO  Porto-ORD Chicago O'Hare Intl
34h 40m1 stop Munich Franz Josef Strauss
$779Lufthansa
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Good to know

Low season

January

Cheapest flight

$326
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 32% increase in price.
Flight from Chicago to Porto

FAQs for booking flights from Illinois to Porto

  • How does KAYAK find such low prices on flights from Illinois to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Lamego
Guimarães
Pinhao
Chaves
Viseu
Esposende
Ponte de Lima
Espinho
Baiao
Arcos de Valdevez
Santa Maria da Feira
Caminha
Mira
Penafiel
Amares
Curia

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Porto (OPO)