United Airlines has a relatively large Boeing 767 fleet at its disposal, with present fleet data made available by ch-aviation showing that the Chicago-based US ‘big three’ legacy carrier and Star Alliance founding member currently operates 37 examples of the 767-300ER and 16 767-400ERs. These are far from its youngest aircraft, with respective average ages of 30.2 and 24.6 years old, but they still have an important role to play at United.

The Boeing 767 is a versatile widebody family, and this is reflected in the variety of routes that United Airlines continues to use the type on today. According to OAG, the ten longest of these between May and December of 2026 range from ten hours and ten minutes in maximum scheduled block time to a whopping 11 hours and 21 minutes, with the new route from Split to Newark (ten hours and five minutes) only just missing out on the top ten.

Newark To Honolulu Is The Longest Of Them All

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Funnily enough, despite the international pedigree of the Boeing 767 family at United Airlines, its longest route at the carrier by maximum block time this year is actually a domestic service. The corridor in question links Newark Liberty International Airport (EWR) in New Jersey with Honolulu International Airport (HNL) in Hawaii, and can take up to 11 hours and 21 minutes. United’s variant of choice on this route is the larger 767-400ER.

According to aeroLOPA, these twinjets have 34 Polaris business class flatbeds on board, alongside 24 Premium Plus recliners and 173 economy class seats (48 with extra legroom). Data from Cirium, an aviation analytics company, shows that, having last served the route on April 11, the 767 won’t be back until November 20. United’s Newark hub was infamous for delays last summer, but it has since improved, with CEO Scott Kirby saying:

“Newark is operating better than ever, and United’s future here is bright. That’s a credit to the thousands of Newark employees who deliver for our customers and one another every day.”

European Big Hitters

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United’s ten longest Boeing 767 routes from May to December of 2026 can be seen in the map above, with the obvious trend being that Europe dominates these rankings. Amsterdam (AMS) to Houston (IAH) ranks second overall, just one minute behind Newark-Honolulu with a maximum block time of 11 hours and 20 minutes. United Airlines serves this route every day using its higher-density three-class 203-seat Boeing 767-300ER jets.

Elsewhere in Europe, Athens (ATH) to Newark is almost as long in duration, topping out at 11 hours and 15 minutes in third place. This summer, the route will be predominantly operated by Boeing 787s, before switching to the 777 in September and October and finally to the 767-400ER in October and November.

Sixth through to tenth on this list are all European routes, with four of the five being Italian. The only outlier is ninth-placed Dubrovnik (DBV) in Croatia to Newark, at 10 hours and 20 minutes with the 767-400ER. This puts it ahead of Bari (BRI) to Newark in tenth (ten hours and ten minutes), but behind Palermo (ten hours and 30 minutes) and Naples (ten hours and 25 minutes) to Newark and Rome to Washington DC (ten hours and 20 minutes).

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The Best Of The Rest

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Elsewhere on the international side of things, United Airlines also uses the Boeing 767-300ER to link Rio de Janeiro (GIG) to its hub at Houston Intercontinental (IAH) on a daily basis. Passengers traveling on this route in the northbound direction can reckon with block times of up to ten hours and 50 minutes.

This sees the route rank fifth overall, putting it just behind Washington Dulles International Airport (IAD) to Honolulu in fourth place. When flying westbound, this route can have a scheduled block time of up to ten hours and 58 minutes. United mainly uses the Boeing 767-400ER on this route, alongside the 787-8.