Aerlingus
www.aerlingus.com/support/special-assistance/medical-conditions/
Air Baltic
www.airbaltic.com/en/special-assistance#passengers-with-special-medical-requirements
Air Canada
https://www.aircanada.com/kr/en/aco/home/plan/accessibility.html#/home:
Air Corsica
www.aircorsica.com/flights/assistance/
Air Malta
Passengers with medical needs : Air Malta
Alitalia
www.ita-airways.com/en_us/fly-ita/baggage/restricted-and-prohibited-items.html
American Airlines
https://www.aa.com/i18n/travel-info/special-assistance/mobility-and-medical-devices.jsp
BH Air
www.bhairlines.com/page.php?id=39
British Airways
www.britishairways.com/content/en/au/information/travel-assistance/medical-conditions-and-pregnancy
Brussels Airlines
www.brusselsairlines.com/be/en/special-care/special-assistance
Croatia Airlines
www.croatiaairlines.com/Special-passenger-categories/accessible-travel
Delta Airlines
https://www.delta.com/us/en/baggage/prohibited-or-restricted-items/personal-care-medical-items
EasyJet
https://www.easyjet.com/en/help/boarding-and-flying/medicine-medical-conditions-and-equipment
Etihad Airways
https://www.etihad.com/en/manage/special-assistance/medical-assistance
Emirates
https://www.emirates.com/uk/english/before-you-fly/health/accessible-travel/
Finnair
www.finnair.com/en/special-assistance-and-health/travelling-with-medical-conditions
Flybe
www.flybe.com/assistance/medication/
Iberia
https://help.iberia.com/results?query=Oxygen
Icelandair
www.icelandair.com/en-gb/support/special-assistance/mobility-assistance/
KLM
www.klm.co.uk/information/assistance-health/medicines-medical-equipment
LOT Polish Airlines
www.lot.com/us/en/journey/special-services/accessible-lot
Logan air
https://www.loganair.co.uk/accessibility-assistance-hub/
Lufthansa
www.lufthansa.com/us/en/mobility-partner-program-healthcare#respiratory_problems
Neos
www.neosair.it/en/before_the_flight/special_assistance/portable_oxygen
Norwegian Airlines
https://www.norwegian.com/uk/legacy/customer-service/special-assistance/medical-conditions/
Pegasus Airlines
www.flypgs.com/en/useful-info/other-info/passengers-with-reduced-mobility-and-health#accordion-exclamation
Ryanair
https://help.ryanair.com/hc/en-gb/sections/12489639235857-Carriage-of-Medical-Equipment
Tap Air Portugal
www.flytap.com/en-gr/special-needs/medical-assistance
SAS
www.flysas.com/en/travel-info/special-travel-needs/health-medical/
Singapore Airlines
https://www.singaporeair.com/en_UK/sg/travel-info/special-assistance/medical-information/
Swiss
www.swiss.com/medicalservices/en/homepage
Tarom
www.tarom.ro/en/passenger-information/about-your-trip/people-with-disabilities.html
Turkish Airlines
www.turkishairlines.com/en-us/any-questions/special-assistance-for-passengers/
Ukraine International Airlines
www.flyuia.com/ua/en/information/passengers-requiring-special-assistance
Virgin Atlantic
https://help.virginatlantic.com/gb/en/special-assistance/medical-conditions.html
Vueling
https://help.vueling.com/hc/en-gb/articles/19798835871377-Medicine-and-Medical-Equipment
Wideroe
www.wideroe.no/en/travel-info/special-assistance
Wizz Air
https://wizzair.com/en-gb/information-and-services/travel-information/special-assistance