CHI - SNN

$341 Find Cheap Flights from Chicago to Shannon - Compare and Save

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Everything you should know

Cheapest round-trip
$723
Typical prices: $726-$1,074
United Airlines
Thu 4/19Sun 4/22
ORD - SNN • 1 stop
Cheapest one-way
$334
Typical prices: $534-$676
United Airlines
Sat 4/14
ORD - SNN • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Chicago and Shannon. You'll need to take a connecting flight to reach the destination.
Insights
Insights
Avoid delays
United Airlines
Most punctual • 65% on-time
Evening
Best time • Fewest delays
Insights
Insights
When to book
22 weeks
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 51% compared to booking last minute.
Insights
Insights
When to travel
April
Cheapest • 35% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
London Heathrow (LHR)
Cheapest • Avg $702 (round-trip)
Boston Logan Intl (BOS)
Shortest trip • 11h 13m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Chicago to Shannon (CHI-SNN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Shannon

Mon, Apr 19 - Thu, Apr 22
United Airlines Logo
4:30 pm - 10:15 amORD  Chicago O'Hare Intl-SNN Shannon
11h 45m1 stop Newark
United Airlines Logo
12:30 pm - 9:00 pmSNN  Shannon-ORD Chicago O'Hare Intl
14h 30m1 stop Newark
$723United Airlines
Mon, Apr 5 - Tue, Apr 13
United Airlines Logo
3:25 pm - 10:15 amORD  Chicago O'Hare Intl-SNN Shannon
12h 50m1 stop Newark
United Airlines Logo
12:30 pm - 7:52 pmSNN  Shannon-ORD Chicago O'Hare Intl
13h 22m1 stop Newark
$724United Airlines
Mon, Apr 19 - Thu, Apr 22
United Airlines Logo
4:30 pm - 10:15 amORD  Chicago O'Hare Intl-SNN Shannon
11h 45m1 stop Newark
United Airlines Logo
12:30 pm - 9:00 pmSNN  Shannon-ORD Chicago O'Hare Intl
14h 30m1 stop Newark
$724United Airlines
Mon, Apr 5 - Tue, Apr 13
United Airlines Logo
4:00 pm - 10:15 amORD  Chicago O'Hare Intl-SNN Shannon
12h 15m2 stops Washington, D.C. Reagan-National Newark
United Airlines Logo
12:30 pm - 7:52 pmSNN  Shannon-ORD Chicago O'Hare Intl
13h 22m1 stop Newark
$724United Airlines
Sun, Nov 29 - Mon, Dec 7
Multiple Airlines Logo
8:10 pm - 12:30 amORD  Chicago O'Hare Intl-SNN Shannon
22h 20m3 stops Lisbon Humberto Delgado Porto Faro
Multiple Airlines Logo
12:15 pm - 5:20 pmSNN  Shannon-ORD Chicago O'Hare Intl
35h 05m3 stops Edinburgh Turnhouse Kastrup Copenhagen Reykjavik Keflavik Intl
$777Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Multiple Airlines Logo
6:30 pm - 9:30 pmORD  Chicago O'Hare Intl-SNN Shannon
21h 00m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
2:35 pm - 3:30 pmSNN  Shannon-ORD Chicago O'Hare Intl
30h 55m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado
$828Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Multiple Airlines Logo
6:30 pm - 9:30 pmORD  Chicago O'Hare Intl-SNN Shannon
21h 00m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
2:35 pm - 3:30 pmSNN  Shannon-ORD Chicago O'Hare Intl
30h 55m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado
$830Multiple Airlines
Sun, Mar 21 - Fri, Mar 26
American Airlines Logo
11:00 am - 6:10 amORD  Chicago O'Hare Intl-SNN Shannon
14h 10m1 stop New York John F Kennedy Intl
American Airlines Logo
2:40 pm - 5:46 amSNN  Shannon-ORD Chicago O'Hare Intl
20h 06m2 stops New York John F Kennedy Intl Cleveland Hopkins Intl
$968American Airlines
Wed, Feb 3 - Sun, Feb 7
American Airlines Logo
6:47 am - 5:50 amORD  Chicago O'Hare Intl-SNN Shannon
17h 03m1 stop Boston Logan Intl
American Airlines Logo
2:00 pm - 9:40 pmSNN  Shannon-ORD Chicago O'Hare Intl
13h 40m1 stop Boston Logan Intl
$1,014American Airlines
Fri, Nov 27 - Thu, Dec 3
American Airlines Logo
12:56 pm - 11:30 amORD  Chicago O'Hare Intl-SNN Shannon
16h 34m2 stops New York John F Kennedy Intl London Heathrow
American Airlines Logo
2:00 pm - 9:54 pmSNN  Shannon-ORD Chicago O'Hare Intl
13h 54m1 stop Boston Logan Intl
$1,038American Airlines
Booking Insights

Price, demand and travel trends for Chicago to Shannon flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Chicago to Shannon?

Round-trip flights from Chicago to Shannon typically range from $726 to $1,074. The lowest price found in the past 5 days was $723, on United Airlines.

What is the cheapest Chicago to Shannon flight route?

There's little price difference between Chicago to Shannon routes. They average around $893 round-trip, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Chicago to Shannon?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Chicago to Shannon. It’s 12% cheaper than the average day, while Saturday is the most expensive, with prices 9% higher.

What’s the cheapest month to fly from Chicago to Shannon?

•April is the cheapest month to fly from Chicago to Shannon at $584 round-trip.
•June ($1,098) and July ($972) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 88% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Chicago to Shannon the cheapest?

Flights from Chicago to Shannon are cheapest 22 weeks before departure. Booking in this window typically costs about 51% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Chicago to Shannon flights

Low season

January

Cheapest flight

$334
Beat the crowds with an average 90% drop in travelers.
The most popular month to fly with an average 122% increase in travelers.
One-way flight from Chicago O'Hare Intl Airport to Shannon

When to book flights from Chicago to Shannon

Are your dates flexible? Find out the best times to travel from Chicago to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Chicago to Shannon flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Chicago to Shannon?

    Three cabin classes are available on flights from Chicago to Shannon:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Chicago to Shannon?

    A nonstop flight from Chicago to Shannon takes 00m, covering 3,572 miles.

  • Do I need a passport to fly from Chicago to Shannon?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Chicago to Shannon flight?

    Round-trip flights from Chicago to Shannon range from $726 to $1,074, with an average of $893 over the past 12 months. Anything below $726 counts as a good deal.

  • How expensive are last-minute Chicago to Shannon flights?

    Last-minute fares on this route (booked within two weeks of departure) run 60% above the $893 route average. Book 22 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Chicago to Shannon?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $702 round-trip via London Heathrow (LHR), compared to $911 for nonstop.

  • How does on-time performance compare across airlines flying from Chicago to Shannon?

    United Airlines is the only airline operating Chicago to Shannon flights. 65% of its flights are on time.

  • What is the standard checked-bag allowance on flights from Chicago to Shannon?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $75–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • How are flight prices from Chicago to Shannon looking right now?

    One-way fares from Chicago to Shannon are currently lower than usual. Average one-way flight prices are about $338, which is 44% below the typical average for this route.

  • What car rental options are available at Shannon Airport (SNN)?

    Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates averaging $33 for economy cars. Top options include:

    • Budget
    • Sixt
    • Europcar
    • Easirent
    • Thrifty

  • Which airports can I use when flying from Chicago to Shannon?

    Flights from Chicago to Shannon may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Flights usually arrive at Shannon (SNN).

  • What time of day has the fewest delays on flights from Chicago to Shannon?

    Evening flights have the fewest delays on this route.

  • At what point is a flight considered delayed from Chicago to Shannon?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Chicago to Shannon route, 35% of flights were delayed in the past 3 months, with delays averaging 2h 41m.

  • Which airports do connecting flights from Chicago to Shannon pass through?

    One-stop flights from Chicago to Shannon most commonly connect through:

    • London Heathrow (LHR) - 46% of one-stop connections
    • Newark (EWR) - 19% of one-stop connections
    • Frankfurt am Main (FRA) - 18% of one-stop connections
    • Boston Logan Intl (BOS) - 12% of one-stop connections

  • Can I save money by using flexible dates for flights from Chicago to Shannon?

    Yes. Flexible dates can save you up to 19% on flights from Chicago to Shannon. Wednesday is the cheapest departure day at $793 round-trip on average, while Saturday is the most expensive at $976, a difference of $183.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Chicago to Shannon?

    Flying via Boston Logan Intl (BOS) gives the shortest average 1-stop total travel time at 11h 13m, compared with 12h 14m via London Heathrow (LHR) and 12h 22m via Newark (EWR).

  • What is the time difference between Chicago and Shannon?

    Shannon is 5 hours ahead of Chicago (Irish Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which airlines offer extra legroom and free seat selection on Chicago to Shannon flights?

    Among airlines operating Chicago to Shannon flights:

    • United Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Chicago to Shannon flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Lufthansa: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Chicago to Shannon flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Saturday. On this route, Wednesday flights average $793, about $183 less than Saturday fares (19% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 51% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Chicago to Shannon trip for April. Fares historically average $584 round-trip in that month - typically $514 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through London Heathrow Airport (LHR) can be cheaper than flying direct. The cheapest layover option averages $702 round-trip on this route - about $208 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Shannon Airport.

    • Park Inn by Radisson Shannon Airport
    • Treacys Oakwood Hotel
    • Carrygerry Country House

More options for your flight from Chicago to Shannon

Complete your trip to Shannon with a hotel stay or car rental

Car rentals in Shannon
Hotels in Shannon