Since Thanos's snap Avengers began to looking for Thanos for 3 weeks. Then at the same time when heroes on Titan planet got turned into ash Nebula and Tony Stark deceided to enter the spaceship, Tony somehow with nebula managed to fix it to gain 2 days ( 48 hours of flight ). Talking to Ms. pots he said they are 1000 light years away from closest groccery shop ( language version in my country at least ). Then she has appeared and when she arrived it got passed 3 weeks since snap, so it took her 19 days to arrive.
1000 light years = 31 536 000 000 light seconds ( time which light needs to perform such distance )
19 days = 24*19*3600 seconds = 1 641 600 seconds
So if we divide it: 31 536 000 000/1 641 600 = 19 210,5
So if we assume she doesn't use jump points like all spaceships in MCU universe she is in travel at least 19 210.5 times speed of light.
What do u think ? Is that lowball or ok ?