DL, UA, AA Chicago to Europe $467–$654 Sep-Oct many, many cities

Chicago stands out today with fares in the $500s and low $600s to dozens of cities across Europe, except Spain and Portugal. Similar fares are found from Washington and New York area airports, but Chicago seems to have more deals to airports across France, Italy, Germany, UK, Benelux and much of eastern Europe with different alliance partners tending to offer lowest fares to their member home bases. This means SkyTeam for France and Italy, Star Alliance to Germany and Greece, Oneworld to UK.

Sample Fares from Chicago to Europe SkyTeam

Most low fares are within Sep 19 – Oct 20 period

Italy SkyTeam

$644 – $669 KLM ORD – FCO Rome Sep 19 – Oct 20 (about 20 dates).

$647 – $671 KLM ORD – MLA Malta Sep 19 – Oct 20 (about 25 dates).

$630 – $662

Bologna
Milan
Venice
Turin
Genoa
Bari
Naples

France SkyTeam

$659 Paris
$646 Nantes
$641 Bordeaux
$647 Lyon
$637 Nice
$642 Toulouse
$657 Marseille
$663 Rennes

Benelux SkyTeam

Luxembourg City $624
Amsterdam $502
Brussels $584

Switzerland/Germany SkyTeam

Geneva $654
Zurich $654
Hamburg $670

Google Flights Star Alliance Chicago – Europe Oct 3-11

There are so many cities that I will not estimates of low fare include departure date. Fares shown are sampled from Oct 6-14 and probably within $20 of lowest fares available. Fares are not included to Scandinavia regularly on sale and some eastern European airports have low fares not shown.