$312 Find Cheap Flights from Chicago to Shannon - Compare and Save

Among airlines operating Chicago O'Hare Intl Airport to Shannon flights:

• United Airlines: offers extra legroom; offers free seat selection

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

Only United Airlines operates flights between Chicago O'Hare Intl Airport and Shannon.

Flights from Chicago O'Hare Intl Airport to Shannon usually depart from Chicago O'Hare Intl (ORD) and arrive at Shannon (SNN).

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 travelers should check the fare details before booking.

Three cabin classes are available on flights from Chicago O'Hare Intl Airport to Shannon:

• Economy Class
• Premium Economy Class
• Business Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $691 round-trip via London Heathrow (LHR), compared to $899 for nonstop.

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.

The Boeing 757-200 family is used most often on this route, operated mainly by United Airlines and Lufthansa. Other aircraft seen on the route include Boeing 787-8 Dreamliner variants.

One-stop flights from Chicago O'Hare Intl Airport to Shannon most commonly connect through:

• London Heathrow (LHR) - 52% of one-stop connections
• Newark (EWR) - 21% of one-stop connections
• Frankfurt am Main (FRA) - 15% of one-stop connections
• Boston Logan Intl (BOS) - 6% of one-stop connections

London Heathrow (LHR) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 21% on the Chicago O'Hare Intl Airport to Shannon route. Wednesday is the cheapest departure day at $777 round-trip on average, while Saturday is the most expensive at $976, a difference of $199. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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 O'Hare Intl Airport to Shannon route, 36% of flights were delayed in the past 3 months, with delays averaging 2 hours 52 minutes.

These are the earliest and latest flight times available from Chicago O'Hare Intl Airport to Shannon:

• Earliest: departs at 6:05 pm and lands at 1:30 am
• Latest: departs at 6:05 pm and lands at 1:30 am.

The flight takes about 7h 25m.

Last-minute fares on this route - booked within 2 weeks of departure - run 54% above the route average of $871. Book 22 weeks before departure for the lowest fares.

A nonstop flight from Chicago O'Hare Intl Airport to Shannon takes 7h 25m, covering 3,578 miles.

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.

One-way fares from Chicago O'Hare Intl Airport to Shannon are currently lower than usual. Average one-way flight prices are about $397, which is 35% below the typical average for this route.

United Airlines is the only airline operating Chicago O'Hare Intl Airport to Shannon flights. 64% of its flights are on time.

Evening flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Boston Logan Intl (BOS) gives the shortest average 1-stop total travel time at 11h 01m, compared with 11h 45m via Newark (EWR) and 12h 24m via London Heathrow (LHR).

Shannon is 6 hours ahead of Chicago O'Hare Intl Airport (Irish Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
• Budget
• Sixt
• Europcar
• Thrifty
• Easirent

Round-trip flights from Chicago O'Hare Intl Airport to Shannon range from $700 to $1,052, with an average of $871 over the past 12 months. Anything below $700 counts as a good deal.